.sender{box-sizing:border-box;border:2px solid #ccc;width:100%;margin-bottom:50px;transition:all .15s;box-shadow:0 0 40px rgba(0,0,0,.15)}.sender textarea{resize:none;outline:none;width:100%}.sender .tip{color:#666;border-right:1px solid #999;margin-right:20px;padding-right:20px}.sender .button{box-sizing:border-box;cursor:pointer;border:2px solid #ccc;border-radius:50%;transition:all .15s;position:relative}.sender .button:hover{border:2px solid #333}.sender .button:before,.sender .button:after{content:"";position:absolute;top:50%;left:50%}.sender .button:before{box-sizing:border-box;border:2px solid transparent;border-color:#333 transparent transparent #333;width:12px;height:12px;transform:translate(-50%,-50%)rotate(45deg)}.sender .button:after{background:#333;width:2px;height:16px;transform:translate(-50%,-50%)}