1.效果图

2.html

<div class="line"></div><h3>获奖名单</h3><!-- 表格 cellspacing内边距 cellpadding外边距--><table  cellspacing="0" cellpadding="0" ><!-- thead表头 --><thead><tr><td>中奖用户</td><td>PR排名</td><td>具体奖品</td></tr></thead>    <!-- tbody表体 --><tbody><tr><td>王振民</td><td>1</td><td><div>一年学费+</div><div class="warp">特别礼品</div></td></tr><tr><td>王振民</td><td>1</td><td><div>一年学费+</div><div class="warp">特别礼品</div></td></tr><tr><td>王振民</td><td>1</td><td><div>一年学费+</div><div class="warp">特别礼品</div></td></tr><tr><td>王振民</td><td>1</td><td><div>一年学费+</div><div class="warp">特别礼品</div></td></tr><tr><td>王振民</td><td>1</td><td><div>一年学费+</div><div class="warp">特别礼品</div></td></tr><tr><td>王振民</td><td>1</td><td><div>一年学费+</div><div class="warp">特别礼品</div></td></tr></tbody><!-- tfoot表尾 --><tfoot><!-- <tr><td>总计</td><td colspan="2">共100名</td></tr> --></tfoot></table>

3.css

*{padding: 0;margin: 0;list-style-type: none;
}
.line{width: 330px;height: 1px;border-top: 1px solid #7ef805;margin: 0 auto;margin-top: 50px;
}
h3{width: 100px;text-align: center;/* 关键点,利用定位让文字居中 */position: relative;margin: 0 auto;bottom: 14px;background-color: white;color: #7ef805;
}
table{width: 330px;/* margin: 0 auto;居中 */margin: 0 auto; text-align: center;vertical-align: middle;
}table tr td{/* width: 10%; */height: 50px;
}
/* 去除表格四周边框 */
table td{border: 1px solid blue;/* 上边框和左边框为0 */border-top: 0;border-left: 0;
}
table td:nth-child(3){border-right: 0;
}
/* 站在父元素的角度上选择最后一个子元素 */
table tbody tr:last-child td{border-bottom: 0;
}
thead{background-color: #7ef805;color: white;
}
.warp{/* font-size: 10px; */font-weight: bolder;
}
/* 隔行变色 */
tbody tr:nth-child(odd){background-color: #7ef805;
}
tbody tr:nth-child(even){background-color: red;
}
tbody tr{border: 1px solid red;
}