Refactor component preview spacing

Author: nndda

src/app/index.ts

@@ -317,7 +317,6 @@ function setCompInfo(comp: string): void {
           <pre><code>${highlightHTML(compHTMLRaw)}</code></pre>
         </div>
       </div>
-      <br>
     `);
 
     const componentHTML: JQuery<HTMLElement> = compPreviewEl.find(".component-html");

src/app/styles/_preview.scss

@@ -15,6 +15,7 @@
     border-radius: 6px;
     background: $bg-main;
     margin-bottom: 1.25em;
+    margin-top: 1.25em;
     overflow: hidden;
 
     &.component-container-img {