批改状态:合格
老师批语:写的不错,下次一天的作业合在一块写!
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>结构伪类选择器:不分组(不区分元素类型)</title><style>body {width: 600px;text-align: center;}/* 匹配第一个子元素 */.h3-title > *:first-child {font-size: 30px;color: blueviolet;}.h3-title > .wsp:first-child {font-size: 30px;color: limegreen;}/* 最后一个元素 */.h3-title > :last-child {font-size: 40px;color: magenta;}/* 选第3个 */.h3-title > :nth-child(3) {border: 2px solid coral;background-color: cornflowerblue;}/* 只选择偶数单元格 2n or even */.h3-title > :nth-child(2n) {background-color: crimson;}/* 获取奇数单元格 odd or 2n-1 */.h3-title > :nth-child(2n-1) {font-size: 50px;}/* 从指定位置开始,选择剩下的所有元素 */.h3-title > .wsp:nth-child(n + 4) {color: goldenrod;}/* 只取前3 */.h3-title > .wsp:nth-child(-n + 3) {color: green;}/* 只取最后3个 */.h3-title > .wsp:nth-last-child(-n + 3) {background-color: greenyellow;}/* 取第8行 用倒数*/.h3-title > .wsp:nth-last-child(2) {background-color: rebeccapurple;font-size: 80px;}</style></head><body><div class="h3-title"><div class="wsp">我是第1行</div><div class="wsp">我是第2行</div><div class="wsp">我是第3行</div><div class="wsp">我是第4行</div><div class="wsp">我是第5行</div><div class="wsp">我是第6行</div><div class="wsp">我是第7行</div><div class="wsp">我是第8行</div><div class="wsp">我是第9行</div></div></body></html>
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