*{padding:0;margin:0;}
.box{width: 600px;margin: 0px auto;padding: 50px 5px 5px 5px;}

.upload{text-align:center;background: #f2f2f2;position: relative;}
.upload:hover{background:#21292f;color:#ffffff; }
.upload input{opacity:0;position: absolute;top: -1px;left: -1px;width: 100%;}