CCS设置第一个li的元素与其他li样式不同

 1 <div class="ly-content-list">
 2             <ul>
 3                 <li>
 4                     <div class="title">
 5                         <p>HBTMNO1234567890</p>
 6                         <span></span>
 7                     </div>
 8                     <div class="content">
 9                         <p>账号：22</p>
10                         <p>姓名：测试22</p>
11                         <p>领用时间：2019-3-24 19:32:45</p>
12                         <p>领用统计</p>
13                         <p>GS3202:20000台</p>
14                         <p>G-140W-MD:20000台</p>
15                         <p>G-140W-MD:20000台</p>
16 
17                         <div class="scan-btn">
18                             <button class="detail-btn">查看设备详情</button>
19                             <button >确认</button>
20                         </div>
21                     </div>
22                 </li>
23                 <li>
24                     <div class="title">
25                         <p>HBTMNO1234567890</p>
26                         <span></span>
27                     </div>
28                     <div class="content">
29                         <p>账号：ceshi</p>
30                         <p>姓名：测试</p>
31                         <p>领用时间：2019-3-24 19:32:45</p>
32                         <p>领用统计</p>
33                         <p>GS3202:20000台</p>
34                         <p>G-140W-MD:20000台</p>
35                         <p>G-140W-MD:20000台</p>
36 
37                         <div class="scan-btn">
38                             <button class="detail-btn">查看设备详情</button>
39                             <button >确认</button>
40                         </div>
41                     </div>
42                 </li>
43 
44             </ul>
45         </div>

 1 .ly-content-list ul li:first-child .content {
 2             position: relative;
 3             color: #999999;
 4             font-size: .2rem;
 5             line-height: .4rem;
 6             min-height: 1rem;
 7             overflow: hidden;
 8             padding: 0 .1rem;
 9             display: "";
10 }
11 .ly-content-list ul li:not(:first-child) .content {
12     position: relative;
13     color: #999999;
14     font-size: .2rem;
15     line-height: .4rem;
16     min-height: 1rem;
17     overflow: hidden;
18     padding: 0 .1rem;
19     display: none;
20 }