.modalDialog {
  position: fixed;
  font-family: Arial, Helvetica, sans-serif;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(0,0,0,0.8);
  z-index: 99999;
  -webkit-transition: opacity 400ms ease-in;
  -moz-transition: opacity 400ms ease-in;
  transition: opacity 400ms ease-in;
  display: none;
  pointer-events: none;
}
.modalDialog:target {
  display: block;
  pointer-events: auto;
}
.modalDialog > div {
  width: 400px;
  max-width: 90vw;
  position: relative;
  margin: 5% auto;
  padding: 5px 20px 13px 20px;
  border-radius: 10px;
  background: #fff;
  background: -moz-linear-gradient(#fff, #999);
  background: -webkit-linear-gradient(#fff, #999);
  background: -o-linear-gradient(#fff, #999);
  max-height: 90vh;
  overflow-y: auto;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .modalDialog > div {
    width: 90vw;
    margin: 10% auto;
    padding: 5px 15px 13px 15px;
  }
}
.close {
  background: #606061;
  color: #FFFFFF;
  line-height: 25px;
  position: absolute;
  right: -12px;
  text-align: center;
  top: -10px;
  width: 24px;
  text-decoration: none;
  font-weight: bold;
  -webkit-border-radius: 12px;
  -moz-border-radius: 12px;
  border-radius: 12px;
  -moz-box-shadow: 1px 1px 3px #000;
  -webkit-box-shadow: 1px 1px 3px #000;
  box-shadow: 1px 1px 3px #000;
}
.close:hover { background: #00d9ff; }