时间:2021-07-01 10:21:17 帮助过:25人阅读
使用引号包括一段字符串,将会向元素内容中添加字符串。栗子:
a:after { content: "after content"; }
栗子:
a:after { content: attr(href); }a:after { content: attr(data-attr); }
栗子:
a::before { content: url(logo.png); }
栗子:
h:before { counter-increment: chapter; cotent: "Chapter " counter(chapter) ". " }
.clear-fix { *overflow: hidden; *zoom: 1; }.clear-fix:after { display: table; content: ""; width: 0; clear: both; }
// CSS代码a { position: relative; display: inline-block; text-decoration: none; color: #000; font-size: 32px; padding: 5px 10px;}a::before, a::after { content: ""; transition: all 0.2s;}a::before { left: 0;}a::after { right: 0;}a:hover::before, a:hover::after { position: absolute;}a:hover::before { content: "\5B"; left: -20px; }a:hover::after { content: "\5D"; right: -20px; }// HTML代码我是个超链接
举个栗子:(譬如对话气泡)
// CSS代码.tooltip { position: relative; display: inline-block; padding: 5px 10px; background: #80D4C8;}.tooltip:before { content: ""; display: block; position: absolute; left: 50%; margin-left: -5px; bottom: -5px; width: 0; height: 0; border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 5px solid #80D4C8;}// HTML代码I'm a tooltip.