为什么这些弹性物品没有包装? [英] Why is these flex items not wrapping?
问题描述
我有一个弹性项目,它也是一个弹性容器.sub-con
,问题是.sub-con
的弹性项目即使在添加了flex-flow: row wrap
之后,也拒绝包装.
I have a flex item that is also a flex container .sub-con
, problem is the flex item of .sub-con
is refusing to wrap, even after adding : flex-flow: row wrap
.
任何人都可以帮我解决这个问题,或者指出我做错了什么.
Can anyone fix this for me, or point out what I'm doing wrong.
.container {
display: flex;
justify-content: center;
align-items: center;
flex-flow: row wrap;
height: 100vh;
}
.sub-con {
margin-right: 50px;
margin-left: 50px;
height: 500px;
background-color: #fff;
display: flex;
justify-content: center;
flex-flow: row wrap;
}
.col-one {
height: 100px;
border: 1px solid lightgreen;
flex-grow: 2;
}
.col-two {
height: 100px;
border: 1px solid red;
flex-grow: 1;
}
<div class="container">
<div class="sub-con">
<div class="col-one"></div>
<div class="col-two"></div>
</div>
</div>
推荐答案
您在嵌套容器中的伸缩项目的大小设置为百分比.
Your flex items in the nested container are sized with percentages.
.col-one{
width: 40%;
height: 100px;
border: 1px solid lightgreen;
}
.col-two{
width: 40%;
height: 100px;
border: 1px solid red;
}
因为百分比长度是基于父级的长度,所以他们没有理由要包装.即使父级的宽度为1%,它们也始终是父级的40%.
Because percentage lengths are based on the length of the parent they have no reason to wrap. They will always be 40% of the parent, even if the parent has a width of 1%.
如果您使用其他长度单位,例如px
或em
,它们将自动换行.
If you use other units for length, such as px
or em
, they will wrap.
.container {
display: flex;
justify-content: center;
align-items: center;
flex-flow: row wrap;
height: 100vh;
}
.sub-con {
flex: 1; /* for demo only */
align-content: flex-start; /* for demo only */
margin-right: 50px;
margin-left: 50px;
height: 500px;
background-color: #fff;
display: flex;
justify-content: center;
flex-flow: row wrap;
}
.col-one {
width: 200px;
height: 100px;
border: 1px solid lightgreen;
}
.col-two {
width: 200px;
height: 100px;
border: 1px solid red;
}
<div class="container">
<div class="sub-con">
<div class="col-one"></div>
<div class="col-two"></div>
</div>
</div>
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