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html代码 <div class="icon"></div> 点 .icon:after { content: " "; border:1px solid white; display: inline-block; } 竖线 .icon:after { content: " "; border: 1px solid white; } 横线/减号 .icon:after { content: " "; border-top: 1px solid white; padding: 8px; } 加号/十字 .icon:before { left: 7px; top: 3px; position: absolute; height: 16px; content: " "; border-left: 2px solid #333; } .icon:after { left: 0; ...
官方教程： https://www.w3school.com.cn/cssref/pr_class_display.asp 博主教程： https://www.cnblogs.com/hy-sunny/p/5602236.html https://www.cnblogs.com/ytshang/p/8931842.html
css 文本两行显示，超出省略号表示 https://www.cnblogs.com/xiaosuibu/p/8196067.html
CSS文本超出2行就隐藏并且显示省略号http://www.cnblogs.com/wyaocn/p/5830364.html