html - 容器匹配 children AND grandchildren 宽度

Question

我有一个容器，里面有很多子孙。我的目标是让容器的宽度与其子代/孙代相匹配。 (底部的 CSS)

简单版本看起来像这样， parent 有一些 child ，它的增长/收缩依赖于 child :http://jsfiddle.net/6qWg6/5/

<div id="container">
    <div class="child">child 1</div>
    <div class="child">child 2</div>
    <div class="child">child 3</div>
    <div class="child">child 4</div>
</div>

当我添加孙子时出现了困难:http://jsfiddle.net/6qWg6/4/

<div id="container">

    <div class="child">child 1</div>
    <div class="child">child 2</div>
    <div class="child">child 3</div>
    <div class="child">child 4</div>

    <div id="child_container">
        <div class="child">child 1</div>
        <div class="child">child 2</div>
        <div class="child">child 3</div>
        <div class="child">child 4</div>
        <div class="child">child 5</div>
        <div class="child">child 7</div>
        <div class="child">child 8</div>
        <div class="child">child 9</div>
        <div class="child">child 10</div>
    </div>

</div>

当我添加孙子时，容器的宽度变为 100%，这是我不希望的。如何在我的容器宽度仍与其后代相匹配的情况下添加孙子？

#container {
    float: left;
    border: 1px solid blue;
    display: inline-block;
    padding: 5px; 
}

#child_container {
    float: left;
    border: 1px solid red;
    padding: 5px; 
}

.child {
    width: 100px;
    float: left;
    border: 1px solid black;
}

Answer 1

好了，我更新了你的 fiddle

http://jsfiddle.net/6qWg6/7/

CSS

#container {
    float: left;
    border: 1px solid blue;
    display: inline;
    padding: 5px; 
}

#child_container {
    display: inline;
}

.child {
    width: 100px;
    float: left;
    border: 1px solid black;
    display: table-cell;
}

HTML

<div id="container">

    <div class="child">child 1</div>
    <div class="child">child 2</div>
    <div class="child">child 3</div>
    <div class="child">child 4</div>

    <div id="child_container">
        <div class="child">child 1</div>
        <div class="child">child 2</div>
        <div class="child">child 3</div>
        <div class="child">child 4</div>
        <div class="child">child 5</div>
        <div class="child">child 7</div>
        <div class="child">child 8</div>
        <div class="child">child 9</div>
        <div class="child">child 10</div>
    </div>

</div>