css自定義下拉菜單，通過偽類控制展開隱藏_html/css_WEB-ITnose

 div.masker { position: absolute; z-index: -1; width: 0; height: 0; } div[p-type="listview"]>input:focus+div+div.masker { left: 0; top: 0; z-index: 10; width: 100%; height: 100%; background-color: transparent; } div.list-cont { position: absolute; top: 100%; left: -1px; right: -1px; z-index: -1; height: 0px; -webkit-transition-property: height, z-index; -webkit-transition-duration: .3s; -webkit-transition-timing-function: ease-in-out; transition-property: height, z-index; transition-duration: .3s; transition-timing-function: ease-in-out; -webkit-transform-origin: 0 0; transform-origin: 0 0; box-sizing: border-box; overflow: hidden; } div[p-type="listview"]>input:focus+div.list-cont { height: 152px; z-index: 10; }