CSS半透明遮罩层 and 定位
Css / 2019-03-16

html <!– 半透明遮罩层 –> <div class=”mask” style=”display: none;”></div> css .mask{ position: fixed; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.5); z-inde…