minor fixes

index.php

@@ -54,6 +54,9 @@ include_once("lib/header.inc.php");
         <?php echo $langArray['latexText']; ?>
       </p>
       <p class="text-center">
+        <a class="btn btn-primary btn-large btn-gold" href="/whylatex/?hl=<?php echo "$hl" ?>">
+          <?php echo $langArray['discoverLatex']; ?>
+        </a>
         <a class="btn btn-primary btn-large btn-gold" href="/ourpackages/?hl=<?php echo "$hl" ?>">
           <?php echo $langArray['latexPolytechnique']; ?>
         </a>

scss/index.scss

@@ -65,6 +65,11 @@ $navbar-fixed-height: 60px;
     background-position: center;
 }
 
+.btn-gold {
+    margin-top: 2px;
+    margin-bottom: 2px;
+}
+
 .btn-gold:hover {
     color: $light;
 }