Question

我需要在包含@roll的最后一个li:after元素中应用background-color: #a1c642动画。我该怎么办？

@-moz-keyframes roll {
	0% { width:0; }
  100% { width:100%; }
}

@-webkit-keyframes roll {
	0% { width:0; }
  100% { width:100%; }
}

.multi-steps > li.is-active:before, .multi-steps > li.is-active ~ li:before {
    content: counter(stepNum);
    font-family: inherit;
    font-weight: 700;
  }
  .multi-steps > li.is-active:after, .multi-steps > li.is-active ~ li:after {
    background-color: #ededed;
  }

  .multi-steps > li.is-active-acao-lojista:before, .multi-steps > li.is-active-acao-lojista ~ li:before {
    content: counter(stepNum);
    font-family: inherit;
    font-weight: 700;
  }
  .multi-steps > li.is-active-acao-lojista:after, .multi-steps > li.is-active-acao-lojista ~ li:after {
    background-color: #ededed;
  }
  
  .multi-steps {
    display: table;
    table-layout: fixed;
    width: 100%;
  }

  .multi-steps > li {
    counter-increment: stepNum;
    text-align: center;
    display: table-cell;
    position: relative;
    color: #a1c642;
    z-index:99!important;
    
  }

  .multi-steps > li.is-active {
    color: #a1c642!important;
    
  }

  .multi-steps > li.is-active-acao-lojista {
    color: darkorange!important;
  }

  .multi-steps > li:before {
    content: '\f00c';
    content: '\2713;';
    content: '\10003';
    content: '\10004';
    content: '\2713';
    display: block;
    margin: 0 auto 4px;
    background-color: #fff;
    width: 36px;
    height: 36px;
    line-height: 32px;
    text-align: center;
    font-weight: bold;
    border-width: 2px;
    border-style: solid;
    border-color: #a1c642;
    border-radius: 50%;

  }
  .multi-steps > li:after {
    content: '';
    height: 2px;
    width: 100%;
    background-color: #a1c642;
    position: absolute;
    top: 16px;
    left: 50%;
    z-index: -1;
  }

  .multi-steps > li:last-child:after {
    display: none;
    
  }
  .multi-steps > li.is-active-acao-lojista:before {
    background-color: #fff;
    border-color: darkorange;
  }
  .multi-steps > li.is-active:before {
    background-color: #fff;
    border-color: #a1c642;;
    
  }
  .multi-steps > li.is-active ~ li {
    color: #808080;
    
  }
  .multi-steps > li.is-active ~ li:before {
    background-color: #ededed;
    border-color: #ededed;
    
  }

  .multi-steps > li.is-active-acao-lojista ~ li {
    color: #808080;
  }
  .multi-steps > li.is-active-acao-lojista ~ li:before {
    background-color: #ededed;
    border-color: #ededed;
  }

<ul class="list-unstyled multi-steps">
  <li>Pedido recebido</li>
  <li class="is-active">Pagamento aprovado</li>
  <li class="is-active-acao-lojista">Faturar pedido</li>
  <li class="is-active-acao-lojista">Enviar dados rastreio</li>
  <li>Confirmar entrega</li>
</ul>

我尝试类似的事情：

.multi-steps > li:after:last-child{
      animation-name: roll;
      animation-duration: 5s;
      animation-timing-function: linear;
  }

也尝试过：

  .multi-steps > li::after:nth-last-child(2){
    animation-name: roll;
    animation-duration: 5s;
    animation-timing-function: linear;
}

但是什么也没发生。

Answer 1

只需尝试将“ li :: after：nth-last-child（2）”更改为“ li：nth-child（2）:: after”。您写的是错误的。您不能同时选择最后一个孩子和第n个孩子。

请记住，子选择器应用于li本身。因此，它应该紧随其后。然后，您可以选择要样式化的li子内部的伪元素。

将动画应用到包含背景颜色＃a1c642

1 个答案: