.modal{display:none;position:fixed;z-index:1;left:0;top:0;width:100%;height:100%;overflow:auto;background-color:rgba(0,0,0,0.5)}.modal-content{background-color:#fefefe;margin:15% auto;padding:20px;border:1px solid #888;width:50%}.close{color:#aaa;float:right;font-size:24px;font-weight:700}.close:hover,.close:focus{color:#000;text-decoration:none;cursor:pointer}