关于 ul 嵌套 li 并且再嵌套 a 的 BUG

  <div class="indicators">
                <ul>
                    <li>1</li>
                    <li>2</li>
                    <li>3</li>
                    <li>4</li>
                </ul>
            </div>

 1  .indicators ul {
 2             width: 100px;
 3             height: 15px;
 4             background:rgba(0,0,0,0.3);
 5             line-height: 15px;
 6             border-radius: 10px;
 7         }
 8         .indicators li {
 9             float: left;
10             border-radius: 50%;
11             width: 15px;
12             height: 15px;
13             background-color: #fff;
14             text-align: center;
15             margin-right: 10px;
16             font-size: 10px;
17             cursor: pointer;
18         }