Resolve "Project homepage > Clone dropdown/input larger than other buttons"

app/assets/stylesheets/framework/variables.scss

@@ -832,3 +832,5 @@ $input-border-color: $theme-gray-200;
 $input-color: $gl-text-color;
 $font-family-sans-serif: $regular_font;
 $font-family-monospace: $monospace_font;
+$input-line-height: 20px;
+$btn-line-height: 20px;