[enh] smaller search form @ results page

searx/static/css/style.css

 .q { width: 30em; }
 
 .engines { color: #888888; }
+
+.small p { margin: 2px 0; }

searx/templates/results.html

 {% extends "base.html" %}
 {% block content %}
-{% include 'search.html' %}
+<div class="small">
+    {% include 'search.html' %}
+</div>
 <div id="results">
     {% for result in results %}
         <div class="result">