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 .s_type { border: none; border-radius: 5px; background-color: #f3f3f3; padding: 7px 0; color: #606266; margin: 5px 2.5% 5px 0; width: 30%; position: relative; } .selecd { background-color: #ebf3ff; color: #5999fc; } .select { background-color: #ebf3ff; color: #5999fc; } .select:before { content: ''; position: absolute; right: 0; bottom: 0; border: 9px solid #5999fc; border-top-color: transparent; border-left-color: transparent; }

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 $(’.s_type’).on(‘click’,function(){ $(this).toggleClass(‘select’); });

 .select { position: relative; width:81px; height:93px; margin: 0 auto; text-align: center; line-height: 93px; color: #4ABE84; background-color: #fff; box-shadow:0px 2px 7px 0px rgba(85,110,97,0.35); border-radius:7px; border:1px solid rgba(74,190,132,1); } .select:before { content: ''; position: absolute; right: 0; bottom: 0; border: 17px solid #4ABE84; border-top-color: transparent; border-left-color: transparent; } .select:after { content: ''; width: 5px; height: 12px; position: absolute; right: 6px; bottom: 6px; border: 2px solid #fff; border-top-color: transparent; border-left-color: transparent; transform: rotate(45deg); }

测试