diff --git a/css/grillade.css b/css/grillade.css
index f43c976..c8569ef 100644
--- a/css/grillade.css
+++ b/css/grillade.css
@@ -1,4 +1,258 @@
+@charset "UTF-8";
 /*!
 * www.KNACSS.com V4.4.2 (24 décembre 2015) @author: Raphael Goetter, Alsacreations
 * Licence WTFPL http://www.wtfpl.net/
-*/[class*=grid-]{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-orient:horizontal;-webkit-box-direction:normal;-webkit-flex-direction:row;-ms-flex-direction:row;flex-direction:row;-webkit-flex-wrap:wrap;-ms-flex-wrap:wrap;flex-wrap:wrap;margin-left:-2rem;letter-spacing:-.31em;text-rendering:optimizespeed}[class*=grid-]>*{box-sizing:border-box;-webkit-box-flex:0;-webkit-flex:0 0 auto;-ms-flex:0 0 auto;flex:0 0 auto;width:calc(100% * 1 / 4 - 2rem - .01px);margin-left:2rem;display:inline-block;vertical-align:top;letter-spacing:normal;text-rendering:auto}[class*=grid-2]>*{width:calc(100% * 1 / 2 - 2rem - .01px)}[class*=grid-2]>.flex-item-double{width:calc(100% * 2 / 2 - 2rem - .01px)}[class*=grid-3]>*{width:calc(100% * 1 / 3 - 2rem - .01px)}[class*=grid-3]>.flex-item-double{width:calc(100% * 2 / 3 - 2rem - .01px)}[class*=grid-4]>*{width:calc(100% * 1 / 4 - 2rem - .01px)}[class*=grid-4]>.flex-item-double{width:calc(100% * 2 / 4 - 2rem - .01px)}[class*=grid-5]>*{width:calc(100% * 1 / 5 - 2rem - .01px)}[class*=grid-5]>.flex-item-double{width:calc(100% * 2 / 5 - 2rem - .01px)}[class*=grid-6]>*{width:calc(100% * 1 / 6 - 2rem - .01px)}[class*=grid-6]>.flex-item-double{width:calc(100% * 2 / 6 - 2rem - .01px)}[class*=grid-7]>*{width:calc(100% * 1 / 7 - 2rem - .01px)}[class*=grid-7]>.flex-item-double{width:calc(100% * 2 / 7 - 2rem - .01px)}[class*=grid-8]>*{width:calc(100% * 1 / 8 - 2rem - .01px)}[class*=grid-8]>.flex-item-double{width:calc(100% * 2 / 8 - 2rem - .01px)}[class*=grid-10]>*{width:calc(100% * 1 / 10 - 2rem - .01px)}[class*=grid-10]>.flex-item-double{width:calc(100% * 2 / 10 - 2rem - .01px)}[class*=grid-12]>*{width:calc(100% * 1 / 12 - 2rem - .01px)}[class*=grid-12]>.flex-item-double{width:calc(100% * 2 / 12 - 2rem - .01px)}@media (max-width:640px){[class*="-small-4"]>*{width:calc(100% * 1 / 4 - 2rem - .01px)}[class*="-small-4"]>.flex-item-double{width:calc(100% * 1 / 2 - 2rem - .01px)}[class*="-small-3"]>*{width:calc(100% * 1 / 3 - 2rem - .01px)}[class*="-small-3"]>.flex-item-double{width:calc(100% * 2 / 3 - 2rem - .01px)}[class*="-small-2"]>*{width:calc(100% * 1 / 2 - 2rem - .01px)}[class*="-small-2"]>.flex-item-double,[class*="-small-1"]>*,[class*="-small-1"]>.flex-item-double{width:calc(100% - 2rem - .01px)}}@media (max-width:320px){[class*="-tiny-2"]>*{width:calc(100% * 1 / 2 - 2rem - .01px)}[class*="-tiny-2"]>.flex-item-double,[class*="-tiny-1"]>*,[class*="-tiny-1"]>.flex-item-double{width:calc(100% - 2rem - .01px)}}.grid-2-1>:nth-child(odd){width:calc(66.66666666666666% - 2rem - .01px)}.grid-2-1>:nth-child(even){width:calc(33.33333333333333% - 2rem - .01px)}@media (max-width:640px){.grid-2-1>:nth-child(n){width:calc(100% - 2rem - .01px)}}.grid-1-2>:nth-child(odd){width:calc(33.33333333333333% - 2rem - .01px)}.grid-1-2>:nth-child(even){width:calc(66.66666666666666% - 2rem - .01px)}@media (max-width:640px){.grid-1-2>:nth-child(n){width:calc(100% - 2rem - .01px)}}.grid-3-1>:nth-child(odd){width:calc(75% - 2rem - .01px)}.grid-3-1>:nth-child(even){width:calc(25% - 2rem - .01px)}@media (max-width:640px){.grid-3-1>:nth-child(n){width:calc(100% - 2rem - .01px)}}.grid-1-3>:nth-child(odd){width:calc(25% - 2rem - .01px)}.grid-1-3>:nth-child(even){width:calc(75% - 2rem - .01px)}@media (max-width:640px){.grid-1-3>:nth-child(n){width:calc(100% - 2rem - .01px)}}.grid-3-2>:nth-child(odd){width:calc(60% - 2rem - .01px)}.grid-3-2>:nth-child(even){width:calc(40% - 2rem - .01px)}@media (max-width:640px){.grid-3-2>:nth-child(n){width:calc(100% - 2rem - .01px)}}.grid-2-3>:nth-child(odd){width:calc(40% - 2rem - .01px)}.grid-2-3>:nth-child(even){width:calc(60% - 2rem - .01px)}@media (max-width:640px){.grid-2-3>:nth-child(n){width:calc(100% - 2rem - .01px)}}.grid-4-1>:nth-child(odd){width:calc(80% - 2rem - .01px)}.grid-4-1>:nth-child(even){width:calc(20% - 2rem - .01px)}@media (max-width:640px){.grid-4-1>:nth-child(n){width:calc(100% - 2rem - .01px)}}.grid-1-4>:nth-child(odd){width:calc(20% - 2rem - .01px)}.grid-1-4>:nth-child(even){width:calc(80% - 2rem - .01px)}@media (max-width:640px){.grid-1-4>:nth-child(n){width:calc(100% - 2rem - .01px)}}.pull{margin-right:auto}.push{margin-left:auto}
\ No newline at end of file
+*/
+/* ---------------------------------- */
+/* ==Grillade                         */
+/* ---------------------------------- */
+/* grid container */
+/* line 93, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-"] {
+  display: flex;
+  flex-direction: row;
+  flex-wrap: wrap;
+  margin-left: -2rem;
+  /* inline-block fallback for IE9 generation */
+  letter-spacing: -0.31em;
+  text-rendering: optimizespeed; }
+
+/* grid childs */
+/* line 105, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-"] > * {
+  box-sizing: border-box;
+  flex: 0 0 auto;
+  width: calc(100% * 1 / 4 - 2rem - .01px);
+  margin-left: 2rem;
+  /* inline-block fallback for IE9 generation */
+  display: inline-block;
+  vertical-align: top;
+  letter-spacing: normal;
+  text-rendering: auto; }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-2"] > * {
+  width: calc(100% * 1 / 2 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-2"] > .flex-item-double {
+  width: calc(100% * 2 / 2 - 2rem); }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-3"] > * {
+  width: calc(100% * 1 / 3 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-3"] > .flex-item-double {
+  width: calc(100% * 2 / 3 - 2rem); }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-4"] > * {
+  width: calc(100% * 1 / 4 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-4"] > .flex-item-double {
+  width: calc(100% * 2 / 4 - 2rem); }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-5"] > * {
+  width: calc(100% * 1 / 5 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-5"] > .flex-item-double {
+  width: calc(100% * 2 / 5 - 2rem); }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-6"] > * {
+  width: calc(100% * 1 / 6 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-6"] > .flex-item-double {
+  width: calc(100% * 2 / 6 - 2rem); }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-7"] > * {
+  width: calc(100% * 1 / 7 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-7"] > .flex-item-double {
+  width: calc(100% * 2 / 7 - 2rem); }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-8"] > * {
+  width: calc(100% * 1 / 8 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-8"] > .flex-item-double {
+  width: calc(100% * 2 / 8 - 2rem); }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-10"] > * {
+  width: calc(100% * 1 / 10 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-10"] > .flex-item-double {
+  width: calc(100% * 2 / 10 - 2rem); }
+
+/* line 121, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-12"] > * {
+  width: calc(100% * 1 / 12 - 2rem - .01px); }
+
+/* line 123, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+[class*="grid-12"] > .flex-item-double {
+  width: calc(100% * 2 / 12 - 2rem); }
+
+/* Responsive grid */
+@media (max-width: 640px) {
+  /* line 171, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-small-4"] > * {
+    width: calc(100% * 1 / 4 - 2rem - .01px); }
+  /* line 174, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-small-4"] > .flex-item-double {
+    width: calc(100% * 1 / 2 - 2rem - .01px); }
+  /* line 177, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-small-3"] > * {
+    width: calc(100% * 1 / 3 - 2rem - .01px); }
+  /* line 180, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-small-3"] > .flex-item-double {
+    width: calc(100% * 2 / 3 - 2rem - .01px); }
+  /* line 183, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-small-2"] > * {
+    width: calc(100% * 1 / 2 - 2rem - .01px); }
+  /* line 186, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-small-2"] > .flex-item-double {
+    width: calc(100% - 2rem - .01px); }
+  /* line 189, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-small-1"] > * {
+    width: calc(100% - 2rem - .01px); }
+  /* line 192, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-small-1"] > .flex-item-double {
+    width: calc(100% - 2rem - .01px); } }
+
+@media (max-width: 320px) {
+  /* line 199, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-tiny-2"] > * {
+    width: calc(100% * 1 / 2 - 2rem - .01px); }
+  /* line 202, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-tiny-2"] > .flex-item-double {
+    width: calc(100% - 2rem - .01px); }
+  /* line 205, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-tiny-1"] > * {
+    width: calc(100% - 2rem - .01px); }
+  /* line 208, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  [class*="-tiny-1"] > .flex-item-double {
+    width: calc(100% - 2rem - .01px); } }
+
+/* line 216, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-2-1 > *:nth-child(odd) {
+  width: calc(66.66667% - 2rem); }
+
+/* line 220, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-2-1 > *:nth-child(even) {
+  width: calc(33.33333% - 2rem); }
+
+@media (max-width: 640px) {
+  /* line 225, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  .grid-2-1 > *:nth-child(n) {
+    width: calc(100% - 2rem); } }
+
+/* line 216, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-1-2 > *:nth-child(odd) {
+  width: calc(33.33333% - 2rem); }
+
+/* line 220, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-1-2 > *:nth-child(even) {
+  width: calc(66.66667% - 2rem); }
+
+@media (max-width: 640px) {
+  /* line 225, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  .grid-1-2 > *:nth-child(n) {
+    width: calc(100% - 2rem); } }
+
+/* line 216, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-3-1 > *:nth-child(odd) {
+  width: calc(75% - 2rem); }
+
+/* line 220, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-3-1 > *:nth-child(even) {
+  width: calc(25% - 2rem); }
+
+@media (max-width: 640px) {
+  /* line 225, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  .grid-3-1 > *:nth-child(n) {
+    width: calc(100% - 2rem); } }
+
+/* line 216, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-1-3 > *:nth-child(odd) {
+  width: calc(25% - 2rem); }
+
+/* line 220, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-1-3 > *:nth-child(even) {
+  width: calc(75% - 2rem); }
+
+@media (max-width: 640px) {
+  /* line 225, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  .grid-1-3 > *:nth-child(n) {
+    width: calc(100% - 2rem); } }
+
+/* line 216, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-3-2 > *:nth-child(odd) {
+  width: calc(60% - 2rem); }
+
+/* line 220, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-3-2 > *:nth-child(even) {
+  width: calc(40% - 2rem); }
+
+@media (max-width: 640px) {
+  /* line 225, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  .grid-3-2 > *:nth-child(n) {
+    width: calc(100% - 2rem); } }
+
+/* line 216, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-2-3 > *:nth-child(odd) {
+  width: calc(40% - 2rem); }
+
+/* line 220, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-2-3 > *:nth-child(even) {
+  width: calc(60% - 2rem); }
+
+@media (max-width: 640px) {
+  /* line 225, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  .grid-2-3 > *:nth-child(n) {
+    width: calc(100% - 2rem); } }
+
+/* line 216, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-4-1 > *:nth-child(odd) {
+  width: calc(80% - 2rem); }
+
+/* line 220, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-4-1 > *:nth-child(even) {
+  width: calc(20% - 2rem); }
+
+@media (max-width: 640px) {
+  /* line 225, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  .grid-4-1 > *:nth-child(n) {
+    width: calc(100% - 2rem); } }
+
+/* line 216, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-1-4 > *:nth-child(odd) {
+  width: calc(20% - 2rem); }
+
+/* line 220, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.grid-1-4 > *:nth-child(even) {
+  width: calc(80% - 2rem); }
+
+@media (max-width: 640px) {
+  /* line 225, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+  .grid-1-4 > *:nth-child(n) {
+    width: calc(100% - 2rem); } }
+
+/* line 262, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.pull {
+  margin-right: auto; }
+
+/* line 266, /Users/raphael/Documents/GitHub/KNACSS/css/grillade.scss */
+.push {
+  margin-left: auto; }
+
+/*# sourceMappingURL=grillade.css.map */
\ No newline at end of file
diff --git a/css/grillade.less b/css/grillade.less
new file mode 100644
index 0000000..125ae12
--- /dev/null
+++ b/css/grillade.less
@@ -0,0 +1,254 @@
+/*!
+* www.KNACSS.com V4.4.2 (24 décembre 2015) @author: Raphael Goetter, Alsacreations
+* Licence WTFPL http://www.wtfpl.net/
+*/
+
+// Config file and project variables
+
+// font sizes
+@base-font-size : 1.4rem; // ex. 1.4rem would be "14px" equivalent
+@line-height    : 1.5; // equiv line-height 1.5
+@h1-size        : 3.2rem; // equiv "32px"
+@h2-size        : 2.8rem; // equiv "28px"
+@h3-size        : 2.4rem; // equiv "24px"
+@h4-size        : 2.0rem; // equiv "20px"
+@h5-size        : 1.8rem; // equiv "18px"
+@h6-size        : 1.6rem; // equiv "16px"
+
+// font stacks
+@font-stack-common      : sans-serif; // common font
+@font-stack-headings    : sans-serif; // headings font
+@font-stack-monospace   : consolas, courier, monospace; // monospace font
+
+// font colors
+@base-color             : #000; // text color on body and content
+@primary-color          : #000; // text color on primary elements
+@secondary-color        : #000; // text color on secondary elements
+@headings-color         : #000; // text color on headings
+@headings-1-color       : #000; // text color on headings level 1
+@headings-2-color       : #000; // text color on headings level 2
+@headings-3-color       : #000; // text color on headings level 3
+@base-color-link        : #333; // base links color
+@base-color-link-hover  : #000; // base hovered/focused links color
+
+// backgrounds
+@base-background        : #fff; // body background color
+@primary-background     : #fff; // primary elements background color
+@secondary-background   : #fff; // secondary elements background color
+
+// spacings (choose unit you prefer)
+@tiny-value             : .5rem; // tiny value for margins / paddings
+@tiny-plus-value        : .7rem; // tiny+ value for margins / paddings
+@small-value            : 1rem; // small value for margins / paddings
+@small-plus-value       : 1.5rem; // small+ value for margins / paddings
+@medium-value           : 2rem; // medium value for margins / paddings
+@medium-plus-value      : 3rem; // medium+ value for margins / paddings
+@large-value            : 4rem; // large value for margins / paddings
+@large-plus-value       : 6rem; // large value for margins / paddings
+@extra-large-value      : 8rem; // extra large value for margins / paddings
+@extra-large-plus-value : 12rem; // extra large value for margins / paddings
+@ultra-large-value      : 16rem; // ultra large value for margins / paddings
+@ultra-large-plus-value : 20rem; // ultra large value for margins / paddings
+
+// breakpoints (choose unit you prefer)
+@tiny-screen            : 320px; // tiny screens media query (less-equal than 320px)
+@tiny-plus-screen       : 480px; // screens between 321px and 480px
+@small-screen           : 640px; // screens between 481px and 640px
+@small-plus-screen      : 768px; // screens between 641px and 768px
+@medium-screen          : 960px; // screens between 769px and 960px
+@medium-plus-screen     : 1024px; // screens between 961px and 1024px
+@large-screen           : 1280px; // screens between 1025px and 1280px
+@large-plus-screen      : 1440px; // screens between 1281px and 1440px
+@extra-large-screen     : 1600px; // screens between 1441px and 1600px
+@ultra-large-screen     : 1920px; // ultra large screens
+
+// grids variables (choose unit you prefer)
+@gutter:  2rem; // gutter value for grid layouts. Unit can be: %, px, em, rem
+@number:  4; // number of equal columns
+@left:    2; // left side of uneven columns
+@right:   1; // right side of uneven columns
+
+//namespace (default : empty)
+@kna-namespace:~"";
+
+/* ---------------------------------- */
+/* ==Grillade                         */
+/* ---------------------------------- */
+
+// Tuto : http://www.alsacreations.com/tuto/lire/1659-une-grille-responsive-avec-flexbox-et-LESS.html
+// Demo : http://codepen.io/raphaelgoetter/pen/zxBMLW
+
+// Usage in vanilla CSS:
+// - <div class="grid-4"> for an equal fourth columns grid container
+// - <div class="grid-2-1"> for an uneven columns grid container
+
+// Usage with preprocessors : if you're using LESS, you can config grids variables :
+// n = number of columns (default = 4)
+// example : .grid-perso { .grid(12); }
+// ... or uneven grids :
+// left = left ratio column (default = 2) / right = right ratio column (default = 1)
+// example : .grid-perso { .uneven-grid(2, 1); }
+
+/* grid container */
+[class*="@{kna-namespace}grid-"] {
+  display: flex;
+  flex-direction: row;
+  flex-wrap: wrap;
+  margin-left: -@gutter;
+
+  /* inline-block fallback for IE9 generation */
+  letter-spacing: -0.31em;
+  text-rendering: optimizespeed;
+}
+
+/* grid childs */
+[class*="@{kna-namespace}grid-"] > * {
+  box-sizing: border-box;
+  flex: 0 0 auto;
+  width: ~'calc(100% * 1 / @{number} - @{gutter} - .01px)';
+  margin-left: @gutter;
+
+  /* inline-block fallback for IE9 generation */
+  display: inline-block;
+  vertical-align: top;
+  letter-spacing: normal;
+  text-rendering: auto;
+}
+
+// LESS mixins for *equal* columns grid container
+// example : .grid-perso { .grid(12); }
+.grid(@number:@number, @gutter:@gutter) {
+  & > * {
+    width: ~'calc(100% * 1 / @{number} - @{gutter} - .01px)';
+  }
+  & > .@{kna-namespace}flex-item-double {
+    width: ~'calc(100% * 2 / @{number} - @{gutter} - .01px)';
+  }
+}
+
+// Examples : will be compiled in CSS
+[class*="@{kna-namespace}grid-2"] {
+  .grid(2);
+}
+[class*="@{kna-namespace}grid-3"] {
+  .grid(3);
+}
+[class*="@{kna-namespace}grid-4"] {
+  .grid(4);
+}
+[class*="@{kna-namespace}grid-5"] {
+  .grid(5);
+}
+[class*="@{kna-namespace}grid-6"] {
+  .grid(6);
+}
+[class*="@{kna-namespace}grid-7"] {
+  .grid(7);
+}
+[class*="@{kna-namespace}grid-8"] {
+  .grid(8);
+}
+[class*="@{kna-namespace}grid-10"] {
+  .grid(10);
+}
+[class*="@{kna-namespace}grid-12"] {
+  .grid(12);
+}
+
+/* Responsive grid */
+// "small-2" = 2 columns when small screen
+// example : .grid-4-small-2 will be 4 then 2 columns
+@media (max-width: @small-screen) {
+  [class*="-small-4"] > * {
+    width: ~'calc(100% * 1 / 4 - @{gutter} - .01px)';
+  }
+  [class*="-small-4"] > .flex-item-double {
+    width: ~'calc(100% * 1 / 2 - @{gutter} - .01px)';
+  }
+  [class*="-small-3"] > * {
+    width: ~'calc(100% * 1 / 3 - @{gutter} - .01px)';
+  }
+  [class*="-small-3"] > .flex-item-double {
+    width: ~'calc(100% * 2 / 3 - @{gutter} - .01px)';
+  }
+  [class*="-small-2"] > * {
+    width: ~'calc(100% * 1 / 2 - @{gutter} - .01px)';
+  }
+  [class*="-small-2"] > .flex-item-double {
+    width: ~'calc(100% - @{gutter} - .01px)';
+  }
+  [class*="-small-1"] > * {
+    width: ~'calc(100% - @{gutter} - .01px)';
+  }
+  [class*="-small-1"] > .flex-item-double {
+    width: ~'calc(100% - @{gutter} - .01px)';
+  }
+}
+// "tiny-1" = 1 column when tiny screen
+// example : .grid-4-small-2-tiny-1 will be 4 then 2 columns then 1 column
+@media (max-width: @tiny-screen) {
+  [class*="-tiny-2"] > * {
+    width: ~'calc(100% * 1 / 2 - @{gutter} - .01px)';
+  }
+  [class*="-tiny-2"] > .flex-item-double {
+    width: ~'calc(100% - @{gutter} - .01px)';
+  }
+  [class*="-tiny-1"] > * {
+    width: ~'calc(100% - @{gutter} - .01px)';
+  }
+  [class*="-tiny-1"] > .flex-item-double {
+    width: ~'calc(100% - @{gutter} - .01px)';
+  }
+}
+
+// LESS mixins for *unequal* columns grid container
+// example : .grid-perso { .uneven-grid(2, 1); }
+.uneven-grid(@left:@left, @right:@right, @gutter:@gutter) {
+  & > *:nth-child(odd) {
+    @size: (@left / (@left + @right)) * 100%;
+    width: ~'calc(@{size} - @{gutter} - .01px)';
+  }
+  & > *:nth-child(even) {
+    @size: (@right / (@left + @right)) * 100%;
+    width: ~'calc(@{size} - @{gutter} - .01px)';
+  }
+  @media (max-width: @small-screen) {
+    & > *:nth-child(n) {
+      width: ~'calc(100% - @{gutter} - .01px)';
+    }
+  }
+}
+
+// Examples : will be compiled in CSS
+.@{kna-namespace}grid-2-1 {
+  .uneven-grid(2,1);
+}
+.@{kna-namespace}grid-1-2 {
+  .uneven-grid(1,2);
+}
+.@{kna-namespace}grid-3-1 {
+  .uneven-grid(3,1);
+}
+.@{kna-namespace}grid-1-3 {
+  .uneven-grid(1,3);
+}
+.@{kna-namespace}grid-3-2 {
+  .uneven-grid(3,2);
+}
+.@{kna-namespace}grid-2-3 {
+  .uneven-grid(2,3);
+}
+.@{kna-namespace}grid-4-1 {
+  .uneven-grid(4,1);
+}
+.@{kna-namespace}grid-1-4 {
+  .uneven-grid(1,4);
+}
+
+.@{kna-namespace}pull {
+  margin-right: auto;
+}
+
+.@{kna-namespace}push {
+  margin-left: auto;
+}
diff --git a/css/grillade.scss b/css/grillade.scss
new file mode 100644
index 0000000..b29d061
--- /dev/null
+++ b/css/grillade.scss
@@ -0,0 +1,272 @@
+/*!
+* www.KNACSS.com V4.4.2 (24 décembre 2015) @author: Raphael Goetter, Alsacreations
+* Licence WTFPL http://www.wtfpl.net/
+*/
+
+// Config file and project variables
+
+// font sizes
+$base-font-size : 1.4rem !default; // ex. 1.4rem would be "14px" equivalent
+$line-height    : 1.5 !default; // equiv line-height 1.5
+$h1-size        : 3.2rem !default; // equiv "32px"
+$h2-size        : 2.8rem !default; // equiv "28px"
+$h3-size        : 2.4rem !default; // equiv "24px"
+$h4-size        : 2.0rem !default; // equiv "20px"
+$h5-size        : 1.8rem !default; // equiv "18px"
+$h6-size        : 1.6rem !default; // equiv "16px"
+
+// font stacks
+$font-stack-common    : sans-serif !default; // common font
+$font-stack-headings  : sans-serif !default; // headings font
+$font-stack-monospace : consolas, courier, monospace !default; // monospace font
+
+// font colors
+$base-color             : #000 !default; // text color on body and content
+$primary-color          : #000 !default; // text color on primary elements
+$secondary-color        : #000 !default; // text color on secondary elements
+$headings-color         : #000 !default; // text color on headings
+$headings-1-color       : #000 !default; // text color on headings level 1
+$headings-2-color       : #000 !default; // text color on headings level 2
+$headings-3-color       : #000 !default; // text color on headings level 3
+$base-color-link        : #333 !default; // base links color
+$base-color-link-hover  : #000 !default; // base hovered/focused links color
+
+// backgrounds
+$base-background        : #fff !default; // body background color
+$primary-background     : #fff !default; // primary elements background color
+$secondary-background   : #fff !default; // secondary elements background color
+
+// spacings (choose unit you prefer)
+$tiny-value             : .5rem !default; // tiny value for margins / paddings
+$tiny-plus-value        : .7rem !default; // tiny+ value for margins / paddings
+$small-value            : 1rem !default; // small value for margins / paddings
+$small-plus-value       : 1.5rem !default; // small+ value for margins / paddings
+$medium-value           : 2rem !default; // medium value for margins / paddings
+$medium-plus-value      : 3rem !default; // medium+ value for margins / paddings
+$large-value            : 4rem !default; // large value for margins / paddings
+$large-plus-value       : 6rem !default; // large value for margins / paddings
+$extra-large-value      : 8rem !default; // extra large value for margins / paddings
+$extra-large-plus-value : 12rem !default; // extra large value for margins / paddings
+$ultra-large-value      : 16rem !default; // ultra large value for margins / paddings
+$ultra-large-plus-value : 20rem !default; // ultra large value for margins / paddings
+
+// breakpoints (choose unit you prefer)
+$tiny-screen            : 320px !default; // tiny screens media query (less-equal than 320px)
+$tiny-plus-screen       : 480px !default; // screens between 321px and 480px
+$small-screen           : 640px !default; // screens between 481px and 640px
+$small-plus-screen      : 768px !default; // screens between 641px and 768px
+$medium-screen          : 960px !default; // screens between 769px and 960px
+$medium-plus-screen     : 1024px !default; // screens between 961px and 1024px
+$large-screen           : 1280px !default; // screens between 1025px and 1280px
+$large-plus-screen      : 1440px !default; // screens between 1281px and 1440px
+$extra-large-screen     : 1600px !default; // screens between 1441px and 1600px
+$ultra-large-screen     : 1920px !default; // ultra large screens
+
+// grids variables (choose unit you prefer)
+$gutter:  2rem !default; // gutter value for grid layouts. Unit can be: %, px, em, rem
+$number:  4 !default; // number of equal columns
+$left:    2 !default; // left side of uneven columns
+$right:   1 !default; // right side of uneven columns
+
+//kna-namespace (default : null)
+$kna-namespace: null !default;
+
+/* ---------------------------------- */
+/* ==Grillade                         */
+/* ---------------------------------- */
+
+// Tuto : http://www.alsacreations.com/tuto/lire/1659-une-grille-responsive-avec-flexbox-et-LESS.html
+// Demo : http://codepen.io/raphaelgoetter/pen/ZYjwEB
+
+// Usage in vanilla CSS:
+// - <div class="grid-4"> for an equal fourth columns grid container
+// - <div class="grid-2-1"> for an uneven columns grid container
+
+// Usage with preprocessors : if you're using Sass, you can config grids variables :
+// n = number of columns (default = 4) / g = gutter value (default = 1em)
+// example : .grid-perso { @include grid(12, 10px); }
+// ... or uneven grids :
+// left = left ratio column (default = 2) / right = right ratio column (default = 1)
+// example : .grid-perso { @include uneven-grid(2, 1, 10px); }
+
+/* grid container */
+[class*="#{$kna-namespace}grid-"] {
+  display: flex;
+  flex-direction: row;
+  flex-wrap: wrap;
+  margin-left: -$gutter;
+
+  /* inline-block fallback for IE9 generation */
+  letter-spacing: -0.31em;
+  text-rendering: optimizespeed;
+}
+
+/* grid childs */
+[class*="#{$kna-namespace}grid-"] > * {
+  box-sizing: border-box;
+  flex: 0 0 auto;
+  width: calc(100% * 1 / #{$number} - #{$gutter} - .01px);
+  margin-left: $gutter;
+
+  /* inline-block fallback for IE9 generation */
+  display: inline-block;
+  vertical-align: top;
+  letter-spacing: normal;
+  text-rendering: auto;
+}
+
+// Sass mixins for *equal* columns grid container
+// example : .grid-perso { @include grid(12); }
+@mixin grid($number:$number,$gutter:$gutter) {
+  & > * {
+    width: calc(100% * 1 / #{$number} - #{$gutter} - .01px);
+  }
+  & > .#{$kna-namespace}flex-item-double {
+    width: calc(100% * 2 / #{$number} - #{$gutter});
+  }
+}
+
+// Examples : will be compiled in CSS
+
+[class*="#{$kna-namespace}grid-2"] {
+  @include grid(2);
+}
+
+[class*="#{$kna-namespace}grid-3"] {
+  @include grid(3);
+}
+
+[class*="#{$kna-namespace}grid-4"] {
+  @include grid(4);
+}
+
+[class*="#{$kna-namespace}grid-5"] {
+  @include grid(5);
+}
+
+[class*="#{$kna-namespace}grid-6"] {
+  @include grid(6);
+}
+
+[class*="#{$kna-namespace}grid-7"] {
+  @include grid(7);
+}
+
+[class*="#{$kna-namespace}grid-8"] {
+  @include grid(8);
+}
+
+[class*="#{$kna-namespace}grid-10"] {
+  @include grid(10);
+}
+
+[class*="#{$kna-namespace}grid-12"] {
+  @include grid(12);
+}
+
+/* Responsive grid */
+// "small-2" = 2 columns when small screen
+// example : .grid-4-small-2 will be 4 then 2 columns
+@media (max-width: $small-screen) {
+  [class*="-small-4"] > * {
+    width: calc(100% * 1 / 4 - #{$gutter} - .01px);
+  }
+  [class*="-small-4"] > .flex-item-double {
+    width: calc(100% * 1 / 2 - #{$gutter} - .01px);
+  }
+  [class*="-small-3"] > * {
+    width: calc(100% * 1 / 3 - #{$gutter} - .01px);
+  }
+  [class*="-small-3"] > .flex-item-double {
+    width: calc(100% * 2 / 3 - #{$gutter} - .01px);
+  }
+  [class*="-small-2"] > * {
+    width: calc(100% * 1 / 2 - #{$gutter} - .01px);
+  }
+  [class*="-small-2"] > .flex-item-double {
+    width: calc(100% - #{$gutter} - .01px);
+  }
+  [class*="-small-1"] > * {
+    width: calc(100% - #{$gutter} - .01px);
+  }
+  [class*="-small-1"] > .flex-item-double {
+    width: calc(100% - #{$gutter} - .01px);
+  }
+}
+// "tiny-1" = 1 column when tiny screen
+// example : .grid-4-small-2-tiny-1 will be 4 then 2 columns then 1 column
+@media (max-width: $tiny-screen) {
+  [class*="-tiny-2"] > * {
+    width: calc(100% * 1 / 2 - #{$gutter} - .01px);
+  }
+  [class*="-tiny-2"] > .flex-item-double {
+    width: calc(100% - #{$gutter} - .01px);
+  }
+  [class*="-tiny-1"] > * {
+    width: calc(100% - #{$gutter} - .01px);
+  }
+  [class*="-tiny-1"] > .flex-item-double {
+    width: calc(100% - #{$gutter} - .01px);
+  }
+}
+
+// Sass mixins for *unequal* columns grid container
+// example : .grid-perso { @include uneven-grid(2, 1); }
+@mixin uneven-grid($left:$left, $right:$right, $gutter:$gutter) {
+  & > *:nth-child(odd) {
+    $size: ($left / ($left + $right)) * 100%;
+    width: calc(#{$size} - #{$gutter});
+  }
+  & > *:nth-child(even) {
+    $size: ($right / ($left + $right)) * 100%;
+    width: calc(#{$size} - #{$gutter});
+  }
+  @media (max-width: $small-screen) {
+    & > *:nth-child(n) {
+      width: calc(100% - #{$gutter});
+    }
+  }
+}
+
+
+// Examples : will be compiled in CSS
+
+.#{$kna-namespace}grid-2-1 {
+  @include uneven-grid(2,1);
+}
+
+.#{$kna-namespace}grid-1-2 {
+  @include uneven-grid(1,2);
+}
+
+.#{$kna-namespace}grid-3-1 {
+  @include uneven-grid(3,1);
+}
+
+.#{$kna-namespace}grid-1-3 {
+  @include uneven-grid(1,3);
+}
+
+.#{$kna-namespace}grid-3-2 {
+  @include uneven-grid(3,2);
+}
+
+.#{$kna-namespace}grid-2-3 {
+  @include uneven-grid(2,3);
+}
+
+.#{$kna-namespace}grid-4-1 {
+  @include uneven-grid(4,1);
+}
+
+.#{$kna-namespace}grid-1-4 {
+  @include uneven-grid(1,4);
+}
+
+.#{$kna-namespace}pull {
+  margin-right: auto;
+}
+
+.#{$kna-namespace}push {
+  margin-left: auto;
+}
diff --git a/gulpfile.js b/gulpfile.js
index 227fd43..97ae8d9 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -24,18 +24,26 @@ gulp.task('css', function () {
     .pipe(gulp.dest('./css/'));
 });
 
-gulp.task('grillade', function() {
+gulp.task('grillade-less', function() {
   return gulp.src(['./less/_00-config.less', './less/_03-grids.less'])
     .pipe(concat('grillade.less'))
+    .pipe(gulp.dest('./css/'))
     .pipe(less())
     .pipe(autoprefixer())
     .pipe(minifycss())
     .pipe(gulp.dest('./css/'));
 });
+gulp.task('grillade-sass', function() {
+  return gulp.src(['./sass/_00-config.scss', './sass/_03-grids.scss'])
+    .pipe(concat('grillade.scss'))
+    .pipe(gulp.dest('./css/'));
+});
 
 // Watcher
 gulp.task('watch', function() {
   gulp.watch(['./less/*.less'], ['css']);
 });
 
+gulp.task('grillade', ['grillade-less', 'grillade-sass']);
+
 gulp.task('default', ['css']);
diff --git a/package.json b/package.json
index e313b0a..4e714c1 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "Raphaël GOETTER, Alsacreations"
   ],
   "description": "KNACSS is a minimalist, responsive and extensible style sheet to kick-start your HTML / CSS projects. It relies on common best practices and experience on the topic.",
-  "main": "css/knacss.css",
+  "main": "https://github.com/alsacreations/KNACSS/tree/master/css",
   "keywords": [
     "css",
     "framework",
@@ -32,6 +32,7 @@
     "gulp": "latest",
     "gulp-rename": "latest",
     "gulp-less": "latest",
+    "gulp-sass": "latest",
     "gulp-concat": "latest",
     "gulp-minify-css": "latest",
     "gulp-autoprefixer": "latest",