Use a search input instead of text. Adapt a little the css.

index.php

@@ -159,7 +159,7 @@
                         <?php if (!is_null ($database)) { ?>
                             <input type="hidden" name="<?php echo DB ?>" value="<?php echo $database ?>" />
                         <?php } ?>
-                        <input type="text" name="query" />
+                        <input type="search" name="query" />
                     </div>
                 </form>
             </div>

style.css

@@ -231,17 +231,22 @@ overflow: hidden;
 
 
 /*-------------Search Aside-------------*/
-#tool input[type=text]
+#tool input[type=search]
 {
 vertical-align: middle;
 width: 100%;
-margin: 5px;
+margin: 3px;
+}
+
+#tool div, #tool form
+{
+height: 32px;
 }
 
 .stop select
 {
 vertical-align: middle;
-margin: 5px;
+margin: 4px;
 }
 
 #sort