clea,

sites/all/themes/gui/materiobasetheme/less/styles.scss

@@ -89,7 +89,7 @@
 }
 
 @mixin bouton(){
-  // .16; change this
+  @include fs16();
   font-weight:bold;
   @include p(0.1em 0.3em 0.2em); @include rounded(0.3em);
   border: 2px solid #ccc; @include bgc(#ccc); color:#4D4D4D; // blanc/bleu
@@ -119,9 +119,9 @@
     @include transition-simply-prefix(margin-left 0.3s ease-out);
     .column-switcher{
       display:inline-block; @include rounded(3px); color:#fff; background-color: #3e3e3e; vertical-align:middle;
-      // .700; .22; change this
+      @include fs700(); @include fs22;
       @include p(0.05em 0.15em 0.2em 0.2em); line-height:0.5; 
-      // .regular;change this
+      @include regular;
       &.prev-column{cursor: w-resize;}
       &.next-column{cursor: e-resize;}
     }
@@ -165,7 +165,7 @@ $headerouterheight:$headerheight+$headerpaddingtop+$headerpaddingbottom;
 
   .logo{
     //width:210px; //padding-left:5px; //margin-left:50px;
-    // .inlineblock; change this
+    @include inlineblock;
     h1{
       margin:0; 
       //.36; change this