fix little style bug

searx/static/css/style.css

 .engine_checkbox input[type="checkbox"]:checked+label:nth-child(2)+label{display:none}
 .engine_checkbox input[type="checkbox"]:checked+label.allow{display:inline}
 a{text-decoration:none;color:#1a11be}a:visited{color:#8e44ad}
-.result{margin:19px 0 18px 0;padding:0;max-width:55em;clear:both}
+.result{margin:19px 0 18px 0;padding:0;max-width:53em;clear:both}
 .result_title{margin-bottom:0}.result_title a{color:#2980b9;font-weight:normal;font-size:1.1em}.result_title a:hover{text-decoration:underline}
 .result_title a:visited{color:#8e44ad}
 .result h3{font-size:1em;word-wrap:break-word;margin:5px 0 1px 0;padding:0}

searx/static/less/style.less

 .result {
 	margin: 19px 0 18px 0;
 	padding: 0;
-	max-width: 55em;
+	max-width: 53em;
 	clear: both;
 }