我创建了仅限CSS的弹出窗口,只能通过单击链接/按钮来工作.我想在页面加载时自动显示此弹出窗口.此外,如何在不点击链接/按钮的情况下打开此弹出窗口,即使用Javascript / jQuery.

Fiddle

.modalDialog {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 99999;
  opacity: 0;
  -webkit-transition: opacity 400ms ease-in;
  -moz-transition: opacity 400ms ease-in;
  transition: opacity 400ms ease-in;
  pointer-events: none;
}
.modalDialog:target {
  opacity: 1;
  pointer-events: auto;
}
.modalDialog > div {
  width: 400px;
  position: relative;
  margin: 10% auto;
  padding: 5px 20px 13px 20px;
  border-radius: 10px;
  background: #fff;
  background: #339999;
}
.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;
}