Fixed site header styles.

src/components/site-header/site-header.scss

@@ -49,7 +49,7 @@
       padding: 20px;
       transform: translateX(0);
       visibility: visible;
-      width: 90vw;
+      width: 90%;
       z-index: 100;
     }
   }

src/components/site-header/site-search/site-search.tsx

@@ -13,8 +13,6 @@ export class SiteSearch {
   @Prop() color: string;
 
   render() {
-    // let isMobile = this.isAlternative ? :;
-
     return (
       <button
         aria-label={this.label}