是否可以在不使用overflow-x:hidden的情况下将元素或伪元素拉伸到水平页面边界

时间:2014-09-11 13:30:05

标签: css css3

我通常使用包装容器元素并使用margin: 0 auto;来获得两侧灵活的扩展边距。在目前的情况下,我想要一个元素伸展到页面的一个边界。我将它的大小设置得更大,宽度大约为999em,然后用overflow剪切overflow-x:hidden

http://codepen.io/rpkoller/pen/omueg

问题是我已经了解到overflow属性是一种错误,特别是在基于webkit的浏览器中并且完全被忽略。但是现在我试图完成任务,但是有点迷失和想法。我在codepen中创建了一个示例:

http://codepen.io/rpkoller/pen/fyLrn

我用于伪元素版本的代码是:

<section>
  <div class="wrap">
    <div class="box"></div>
  </div>
</section>

css看起来像

.wrap {
  background-color:red;
  width: 50rem;
  margin: 0 auto;
  height: 40rem;
}

section {
  padding-top:4rem;
  width:100%;
  background-color: green;
  height:40rem;
}

.box {
    height: 3.5rem;
    line-height: 3.5rem;
    position:relative;
    text-align: left;
    top: 0;
    left:17.75rem;
    padding-left: 1rem;
    background-color:grey;
    width:15rem;
    &:after {
        content: "";
        position:absolute;
        background-color:blue;
        top:0;
        bottom:0;
        width: 35rem;
        left:100%;
    }
}

但我也可以完全删除:after伪元素,并在.box类上设置更大的宽度。但无论哪种方式,它都无助于将元素跨越到右边界。是否有可能将灰色框(没有伪元素)或蓝色框(带有伪元素)一直拉伸到页面的右边界?

1 个答案:

答案 0 :(得分:0)

如果我理解你想要这样的东西:http://jsfiddle.net/xckL79he/4/

我使用第二个div来做那个,因为主要的问题是.box有一个定义的宽度所以伪元素在宽度上会有相同的:100%; 第一个解决方案是伪,第二个是背景渐变(我认为不太安全)。

这是小提琴的代码

HTML

<section>
  <div class="wrap">
      <div class="boxContainer">
          <div class="box">Plop</div>
      </div>
      <br /><br />
      <div class="boxContainerGradient">
          <div class="box">Plop</div>
      </div>
  </div>
 </section>

CSS

section {
  padding-top:4rem;
  width:100%;
  background-color: green;
  height:40rem;
}

.wrap {
  background-color:red;
  width: 50rem;
  margin: 0 auto;
  height: 40rem;
}

.boxContainer{
    position:relative;
}
.boxContainer::before {
        content: "";
        position:absolute;
        background-color:blue;
        top:0;
        right:0;
        width: 50%;
        height:100%;
}
.box{
    height: 3.5rem;
    line-height: 3.5rem;
    position:relative;
    text-align: left;
    margin:auto;
    width:15rem;
}

.boxContainerGradient{
/* IE9 SVG, needs conditional override of 'filter' to 'none' */
background: url(data:image/svg+xml;base64,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);
background: -moz-linear-gradient(left,  rgba(0,0,255,0) 0%, rgba(0,0,255,0) 49%, rgba(0,0,255,1) 50%, rgba(0,0,255,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, right top, color-stop(0%,rgba(0,0,255,0)), color-stop(49%,rgba(0,0,255,0)), color-stop(50%,rgba(0,0,255,1)), color-stop(100%,rgba(0,0,255,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(left,  rgba(0,0,255,0) 0%,rgba(0,0,255,0) 49%,rgba(0,0,255,1) 50%,rgba(0,0,255,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(left,  rgba(0,0,255,0) 0%,rgba(0,0,255,0) 49%,rgba(0,0,255,1) 50%,rgba(0,0,255,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(left,  rgba(0,0,255,0) 0%,rgba(0,0,255,0) 49%,rgba(0,0,255,1) 50%,rgba(0,0,255,1) 100%); /* IE10+ */
background: linear-gradient(to right,  rgba(0,0,255,0) 0%,rgba(0,0,255,0) 49%,rgba(0,0,255,1) 50%,rgba(0,0,255,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#000000ff', endColorstr='#0000ff',GradientType=1 ); /* IE6-8 */


}