Fixed UI to make options aligned

public/index.html

@@ -74,8 +74,7 @@
               <div id="brush-colour">
                 <h3>Brush colour</h3>
               </div>
-              &nbsp;
-              <a href="#">
+              <a href="#" style="margin-left: 1%">
                 <div id="rectangle"></div>
               </a>
             </div>

public/styles.css

@@ -360,6 +360,7 @@ button.selected {
 .slide-size {
   width: 90%;
   height: 20%;
+  margin-left: 2.2%;
 }
 
 .slider {