在父宽度和最大宽度之间设置一个孩子的宽度 [英] Set a child's width between parent's width and max-width
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问题描述
我想创建一个有一些限制的CSS菜单:
- 父母的高度和宽度
< div>
未知 -
< li> 的数量未知 -
< ul>
必须不小于< div>
width - 一行
< li>
必须包含尽可能多的< li>
max-width
< ul>
我想要的:
<问题是:实际上
< ul>
过多地考虑了初始宽度,并且没有展开。如果您点击运行代码段,您将看到它。 HTML可以更改;弯曲和技巧是受欢迎的; JS不受欢迎; IE10支持是必需的。
div {background:yellow;显示:inline-block; padding:20px 30px; position:relative;} ul {background:lightblue;左:0;保证金:0; max-width:450px;最小宽度:100%;填充:0;位置:绝对; top:100%;} li {background:orange;显示:inline-block; margin:2px; padding:20px 25px;}
< div> Stabat mater dolorosa< ul> <李→1< /锂> <李→2< /锂> <李→3< /锂> <李→4< /锂> < / div>< / div>
解决方案 >是
结果,
所以
$ b
div
的子项。 ul
绝对定位在 div
的边界内,因为 div
是最接近的定位祖先( position:相对
) ul
不能超过<$ c $的宽度c> div ,它被设置为 inline-block
。 li
项目必须根据 div
和 max-width
的宽度进行换行。被忽略。我建议您尝试一种不同的方法。
纯CSS和HTML 表
元素可以满足您的所有需求。
$ b
tr:first-child td span {display:inline-block; padding:20px 30px;背景:黄色;} tr:最后一个孩子td {max-width:450px;} ul {margin:0;填充:0; list-style-type:none; background-color:lightblue;} li {background:orange;显示:inline-block; margin:2px; padding:20px 25px;}
< table> < TR> < td>< span> Stabat mater dolorosa< / span>< / td> < / TR> < TR> < TD> < UL> <李→1< /锂> <李→2< /锂> <李→3< /锂> <李→4< /锂> < / UL> < / TD> < / tr>< / table>
=https://jsfiddle.net/uhe37sqL/1/ =nofollow noreferrer> jsFiddle
- 父母的高度和宽度
< div>
未知无问题
< li>
的数量未知无问题
< ; ul>
必须不小于< div>
width 是 li>< li>
的一行必须包含尽可能多的< li>
c> max-width< ul>
是
- 否JavaScript 是
- 支持IE10 是
I want to build a CSS menu with some restrictions:
- height and width of the parent
<div>
are unknown - the number of
<li>
is unknown <ul>
must be not smaller than<div>
width- one row of
<li>
must contain as many<li>
as possible withmax-width
of<ul>
What I want:
The problem is: actually <ul>
respects initial width too much and doesn't expand. If you click 'Run the code snippet', you will see it.
HTML can be changed; flex and tricks are welcome; JS is not welcome; IE10 support is required.
div {
background: yellow;
display: inline-block;
padding: 20px 30px;
position: relative;
}
ul {
background: lightblue;
left: 0;
margin: 0;
max-width: 450px;
min-width: 100%;
padding: 0;
position: absolute;
top: 100%;
}
li {
background: orange;
display: inline-block;
margin: 2px;
padding: 20px 25px;
}
<div>Stabat mater dolorosa
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
</div>
解决方案
Here's the problem with your approach:
- The
ul
is a child of thediv
. - The
ul
is absolutely positioned within the boundaries of thediv
, because thediv
is the nearest positioned ancestor (position: relative
) - As a result, the
ul
cannot extend past the width of thediv
, which is set toinline-block
. - So the
li
items must wrap based on the width of thediv
and themax-width
is ignored.
I suggest you try a different method.
With pure CSS and HTML table
elements all your requirements can be met.
tr:first-child td span {
display: inline-block;
padding: 20px 30px;
background: yellow;
}
tr:last-child td {
max-width: 450px;
}
ul {
margin: 0;
padding: 0;
list-style-type: none;
background-color: lightblue;
}
li {
background: orange;
display: inline-block;
margin: 2px;
padding: 20px 25px;
}
<table>
<tr>
<td><span>Stabat mater dolorosa</span></td>
</tr>
<tr>
<td>
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
</ul>
</td>
</tr>
</table>
jsFiddle
- height and width of the parent
<div>
are unknown NO PROBLEM- the number of
<li>
is unknown NO PROBLEM<ul>
must be not smaller than<div>
width YES- one row of
<li>
must contain as many<li>
as possible withmax-width
of<ul>
YES- No JavaScript YES
- IE10 support YES
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