Remove unneeded min-width.

app/assets/stylesheets/pages/projects.scss

@@ -929,12 +929,7 @@ pre.light-well {
   }
 
   .variable-key {
-    /* 45px is not the actual maximum width. The
-      browser uses it to calculate cell width relative
-      to variable-value and variable-menu */
-    max-width: 45px;
-    // This is the actual min-width, makes a difference only on small screens
-    min-width: 100px;
+    max-width: 120px;
     overflow: hidden;
     word-wrap: break-word;
     white-space: nowrap;