#captcha-button{background-color:#fff;border:1px solid #cfcfcf;border-radius:5px;box-sizing:border-box;color:#333;cursor:pointer;font-size:14px;line-height:22px;padding:8px 0;position:relative;text-align:center;transition:all .2s ease;-webkit-user-select:none;-moz-user-select:none;user-select:none;width:150px;z-index:9}#captcha-button:hover{background-color:#f5f5f5;border-color:#999}#captcha-button:active{background-color:#e5e5e5}#captcha-button:before{background:transparent;bottom:-2px;content:"";left:-2px;position:absolute;right:-2px;top:-2px;z-index:-1}