improved assisted research ui

web/themes/custom/materiotheme/assets/styles/main.scss

@@ -581,19 +581,25 @@ header[role="banner"]{
 			grid-template-columns: auto auto;
 			grid-template-rows: auto auto;
 			row-gap: 0.2em;
+			justify-items: stretch;
       .form-item, input.button{
         display: inline-block;
 				margin: 0;
       }
 
-      #edit-search{
+			.form-item-search{
 				grid-row: 1 / 1;
 				grid-column: 1 / 1;
-        border:1px #BBB solid;
-        border-radius: 14px;
-        padding:0.3em;
-        color:#666;
-      }
+				position: relative;
+				#edit-search{
+					border:1px #BBB solid;
+					border-radius: 14px;
+					padding:0.3em;
+					color:#666;
+					width: 100%;
+					box-sizing: border-box;
+				}
+			}
 
 			fieldset#edit-filters{
 				grid-row: 2 / 2;