Optimize layout

app/assets/javascripts/components/App.js

@@ -87,10 +87,10 @@ export default class App extends React.Component {
           // </Row>
         }
         <Row>
-          <Col sm={3} md={3} lg={3}>
+          <Col sm={2} md={2} lg={2}>
             <CollectionTree />
           </Col>
-          <Col sm={7} md={7} lg={7}>
+          <Col sm={8} md={8} lg={8}>
             <Elements />
           </Col>
           <Col sm={2} md={2} lg={2}>
@@ -129,7 +129,7 @@ export default class Elements extends React.Component {
   }
 
   render() {
-    let width = this.state.currentElement ? "75%" : 0
+    let width = this.state.currentElement ? "65%" : 0
     let elementDetails;
 
     if(this.state.currentElement) {