.shopping-cerca {
  float: right;
  background: #ffffff;
  width: 200px;
  border:solid 1px #dfdfdf;
  position: relative;
  padding:0;
  margin: 0px;
}
.cerca img{width:49px;}
.cerca-top{position:absolute; z-index: 1000; margin-top:7px;}
/* Firefox */
@-moz-document url-prefix() { 
.cerca-top{margin-top:11px}
}
.cerca-top input[type="text"]{width:155px;border:0;background:transparent;margin:0;}