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正确
<div class="alert alert-success @(17)">
<button class="close" data-dismiss="alert">X</button>
Blah blah blah.
</div>
<div class="alert alert-success alert-dismissible">
<button class="close" data-dismiss="alert">X</button>
Blah blah blah.
</div>
不正确
点击 此处 重试 正确
下一题 ❯<div class="alert alert-successw3exercise_input_no_0"> <button class="close" data-dismiss="alert">X</button> Blah blah blah. </div> |