Change font-weight for font-awesome

scss/partials/_base.scss

@@ -204,6 +204,7 @@ hr{
     visibility:visible;
     content:"";
     font-family: $fa;
+    font-weight: 900;
     display:inline-block;
 }
 
@@ -273,7 +274,7 @@ span[id*='MathJax-Span']{
     display:inline-block;
     font-family: $fa;
     font-style:normal;
-    font-weight:normal;
+    font-style:normal;
     line-height:1;
     -webkit-font-smoothing:antialiased;
     -moz-osx-font-smoothing:grayscale;

scss/partials/_boxes.scss

@@ -35,6 +35,7 @@ $types: (
 
             &:before{
                 font-family: $fa;
+                font-weight: 900;
                 content: map-get($map, icon);
             }
         }
@@ -52,7 +53,7 @@ $types: (
         margin-right: 8px;
         font-family: $fa;
         display: inline-block;
-        font-weight: $normal;
+        font-weight: 900;
         line-height: 1;
         text-decoration: inherit;
     }