input[type=file]{width:.1px;height:.1px;opacity:0;overflow:hidden;position:absolute;z-index:-1}input[type=file]+span{cursor:pointer}input[type=file]:focus+span{outline:1px dotted #000;outline:-webkit-focus-ring-color auto 5px}.form-group a.btn:not(.btn-xs),.form-group span.btn:not(.btn-xs){margin-top:5px;margin-right:5px;width:100%;overflow:hidden}