css - 多个 CSS3 元素上的垂直 Accordion

Question

我使用 CSS3 创建了一个带有 Accordion 式过渡的导航菜单。我对它很满意，效果很好。这是我编写的代码的实时版本:http://codepen.io/anon/pen/EJoxr

我想通过添加一个新功能来改进它:我想弹出我点击的 div 的文章，还有上一个 div。

我的意思是，如果我单击名为“联系我们”的第 4 个 div，我想显示所有文章。点击 2th 只显示 1st 和 2nd。

可以用 CSS3 做到这一点吗？

HTML :

<div class="container">
    <section class="ac-container">
        <div>
            <input id="ac-1" name="accordion-1" type="checkbox" />
            <label for="ac-1">About us</label>
            <article class="ac-small">
                <p>Well, the way they make shows is, they make one show. That show's called a pilot. Then they show that show to the people who make shows, and on the strength of that one show they decide if they're going to make more shows.</p>
            </article>
        </div>
        <div>
            <input id="ac-2" name="accordion-1" type="checkbox" />
            <label for="ac-2">How we work</label>
            <article class="ac-medium">
                <p>Like you, I used to think the world was this great place where everybody lived by the same standards I did, then some kid with a nail showed me I was living in his world, a world where chaos rules not order, a world where righteousness is not rewarded. That's Cesar's world, and if you're not willing to play by his rules, then you're gonna have to pay the price. </p>
            </article>
        </div>
        <div>
            <input id="ac-3" name="accordion-1" type="checkbox" />
            <label for="ac-3">References</label>
            <article class="ac-large">
                <p>You think water moves fast? You should see ice. It moves like it has a mind. Like it knows it killed the world once and got a taste for murder. After the avalanche, it took us a week to climb out. Now, I don't know exactly when we turned on each other, but I know that seven of us survived the slide... and only five made it out. Now we took an oath, that I'm breaking now. We said we'd say it was the snow that killed the other two, but it wasn't. Nature is lethal but it doesn't hold a candle to man. </p>
            </article>
        </div>
        <div>
            <input id="ac-4" name="accordion-1" type="checkbox" />
            <label for="ac-4">Contact us</label>
            <article class="ac-large">
                <p>You see? It's curious. Ted did figure it out - time travel. And when we get back, we gonna tell everyone. How it's possible, how it's done, what the dangers are. But then why fifty years in the future when the spacecraft encounters a black hole does the computer call it an 'unknown entry event'? Why don't they know? If they don't know, that means we never told anyone. And if we never told anyone it means we never made it back. Hence we die down here. Just as a matter of deductive logic. </p>
            </article>
        </div>
    </section>
</div>

CSS:

div {
  display: block;
  width: 25%;
  float:left;
}
.ac-container{
    width: 900px;
    margin: 10px auto 30px auto;
    text-align: left;
}
.ac-container label{
    font-family: 'BebasNeueRegular', 'Arial Narrow', Arial, sans-serif;
    padding: 5px 20px;
    position: relative;
    z-index: 20;
    display: block;
    height: 30px;
    cursor: pointer;
    color: #777;
    text-shadow: 1px 1px 1px rgba(255,255,255,0.8);
    line-height: 33px;
    font-size: 19px;
    background: #ffffff;
    background: -moz-linear-gradient(top, #ffffff 1%, #eaeaea 100%);
    background: -webkit-gradient(linear, left top, left bottom, color-stop(1%,#ffffff), color-stop(100%,#eaeaea));
    background: -webkit-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
    background: -o-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
    background: -ms-linear-gradient(top, #ffffff 1%,#eaeaea 100%);
    background: linear-gradient(top, #ffffff 1%,#eaeaea 100%);
    filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#ffffff', endColorstr='#eaeaea',GradientType=0 );
    box-shadow: 
        0px 0px 0px 1px rgba(155,155,155,0.3), 
        1px 0px 0px 0px rgba(255,255,255,0.9) inset, 
        0px 2px 2px rgba(0,0,0,0.1);
}
.ac-container label:hover{
    background: #fff;
}
.ac-container input:checked + label,
.ac-container input:checked + label:hover{
    background: #c6e1ec;
    color: #3d7489;
    text-shadow: 0px 1px 1px rgba(255,255,255, 0.6);
    box-shadow: 
        0px 0px 0px 1px rgba(155,155,155,0.3), 
        0px 2px 2px rgba(0,0,0,0.1);
}
.ac-container label:hover:after,
.ac-container input:checked + label:hover:after{
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    right: 13px;
    top: 7px;
    background: transparent url(../images/arrow_down.png) no-repeat center center;  
}
.ac-container input:checked + label:hover:after{
    background-image: url(../images/arrow_up.png);
}
.ac-container input{
    display: none;
}
.ac-container article{
    background: rgba(255, 255, 255, 0.5);
    margin-top: -1px;
    overflow: hidden;
    height: 0px;
    position: relative;
    z-index: 10;
    -webkit-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
    -moz-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
    -o-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
    -ms-transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
    transition: height 0.3s ease-in-out, box-shadow 0.6s linear;
}
.ac-container article p{
    font-style: italic;
    color: #777;
    line-height: 23px;
    font-size: 14px;
    padding: 20px;
    text-shadow: 1px 1px 1px rgba(255,255,255,0.8);
}

.ac-container input:checked ~ article.ac-small{
    height: 140px;
}
.ac-container input:checked ~ article.ac-medium{
    height: 180px;
}
.ac-container input:checked ~ article.ac-large{
    height: 230px;
}

注意:如果需要我可以使用 SASS

Answer 1

关于如何实现它的答案是:不，你不能只用 CSS 实现它

但是，如果您更改了标记和显示，您也许可以按照自己喜欢的方式定位内容，尽管您可能需要对样式进行相当大的更改。无论如何，现在您拥有:

div-1
  input-1
  article-1
div-2
  input-2
  article-2
...

当检查第二个输入时，您无法定位第一篇文章，因为您无法遍历 div-2 并且，即使可以，您也无法从 div-2< 遍历 到 div-1。

话虽如此，如果您真的想尝试，可以拉出 div，反转标记和显示顺序(并使用 float 或文本方向反转它们的样式)。然后，您可以:

input-4
article-4
input-3
article-3
....

您可以使用 float 或文本方向来设置样式，以仍然明显地显示 1、2、3、4。因为标记是 4,3,2,1，理论上，如果选中较高的数字，您可以定位较低的数字，例如:

input:checked ~ article {/*show*/}

使用此规则，如果选中第四个输入(再次显示在右侧，尽管它位于标记中的第一个)，它将显示所有文章。此外，如果选中 3(未选中 4)，则会显示 3、2、1 等。