可滚动区域内绝对定位的 div 不超出视口

Question

说明

当包含 overflow:auto 或 overflow:scroll 的 div 包含一系列 display:inline-block 元素，以至于它将内容推得足够宽以创建滚动条时，带有 left:0;right:0; 的后续 position:absolute 元素无法填充过去可滚动的视口，这样滚动包含的 div，也会滚动绝对定位的元素。

Fiddle（定位“结果”窗口的宽度，使您获得水平滚动条，然后左右滚动观察.row-cover div 的背景未能延伸到可滚动地区）

问题

我正在寻找仅 CSS 的解决方案。为了用一个元素“覆盖”.row，我应该进行哪些 CSS 更改，从而使其下方的内容被“隐藏”？

HTML

<div class="outer-outer-container">
    <div class="outer-container">
        <div class="row">
            <div class="row-cover"></div> <!-- BACKGROUND IMAGE DOES NOT EXTEND FULL WIDTH -->
            <div class="columns">
                <div class="column">
                    <div class="column-inner">
                        10
                    </div>
                </div>
                <div class="column">
                    <div class="column-inner">
                        10
                    </div>
                </div>
                <div class="column">
                    <div class="column-inner">
                        10
                    </div>
                </div>
                <div class="column">
                    <div class="column-inner">
                        10
                    </div>
                </div>
                <div class="column">
                    <div class="column-inner">
                        10
                    </div>
                </div>
            </div>
        </div>
        <!-- FOR BREVITY THE FOLLOWING ROWS ARE MINIFIED -->
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
        <div class="row"><div class="row-cover"></div><div class="columns"><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div><div class="column"><div class="column-inner">10</div></div></div></div>
    </div>
</div>

CSS

html,
body{
    height:100%;
    margin:0;
    padding:0;
}
*, :after, :before, input[type=checkbox], input[type=radio] {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
.outer-outer-container{
    position:absolute;
    top:20px;
    left:20px;
    right:20px;
    bottom:20px;
    overflow:hidden;
}
.outer-container{
    position:absolute;
    top:0;
    left:0;
    right:0;
    bottom:0;
    overflow-y:scroll;
    overflow-x:auto;
    background-color:#f1f1f1;
}
.row{
    position:relative;
    width:100%;
}
.columns{
    /* remove "gaps" between inline-block items */
    font-size:0;
    line-height:0;
    white-space:nowrap;
    width:100%;
}
.column{
    /* reset font-size and line-height from "gaps" between inline-block items fix */
    font-size:1rem;
    line-height:1.4;
    display:inline-block;
    width:400px;
    text-align:center;
    vertical-align:top;
    margin-left:2px;
    margin-bottom:2px;
    background-color:#FFF;
}
.column-inner{
    height:48px;
    font-size:1.2rem;
}
.row-cover{
    position: absolute;
    z-index: 2;
    top:0;
    right:0;
    left:0;
    bottom:0;
    background:repeating-linear-gradient(-45deg,rgba(255,255,255,.5),rgba(255,255,255,.5) 25%,rgba(204,204,204,.5) 25%,rgba(204,204,204,.5) 50%,rgba(255,255,255,.5) 50%) top left fixed;
    background-size: 20px 20px;
}

编辑

更新为包含具有 overflow:hidden 以禁用 body 滚动的外部容器

Answer 1

将外部容器 div 设置为display:table。

https://jsfiddle.net/d4mhr1ev/1/