div class= "ms-u"/ div div class= "ms-u"/ div div class= "m
<div class="ms-u"></div> <div class="ms-u"></div> <div class="ms-u"></div>
$(".vipCardItem:nth-child(1)").addClass("current");
.ms-u:nth-child(1) {......}
源文：https://blog.csdn.net/luckymaoyy/article/details/53666241
css如何选择同一个class下的第一个div?
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