如何更改flexbox包装？
我的应用程序中有一个响应式flexbox框，其中包含动态呈现的卡片（每个api调用呈现1-10张卡片）。除了包裹的方式外，它几乎可以完全满足我的要求。
假设我渲染了10张卡片，如果我调整屏幕大小，使其变成例如4-4-2，则最后2张卡片居中，我希望将其包裹起来，以便最后2张卡片从左侧开始并以相等的间距从上方开始。你该怎么做？
编辑以进一步说明：假设我将尺寸进一步调整为1-1-1-1-1-1-1-1-1-1，卡片应居中显示，我仍然需要居中，但我希望最后2张如果卡变成4-4-2或3-3-2等，则从左侧缠绕卡。
.card { text-align: center;
box-shadow: 0 1px 3px 0 #d4d4d5, 0 0 0 1px #d4d4d5;
max-width: 300px;
margin: 2rem;
padding-bottom: 1rem;
}
.container {
padding-right: 15px;
padding-left: 15px;
margin-right: auto;
margin-left: auto;
}
.recipe-grid {
display: flex;
flex-wrap: wrap;
justify-content: space-around
}
<div class="container">
<div class="recipe-grid">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
</div>
回答：
如果要使用Flexbox，并且没有脚本，则可以创建 ghost 元素，以便它们填充最后一行的空间。
因此，对于可能为4的列长，您需要3个 ghost 元素，依此类推。
也可以使用伪元素，这将使所需的 虚数 减少2。
.card { text-align: center;
box-shadow: 0 1px 3px 0 #d4d4d5, 0 0 0 1px #d4d4d5;
max-width: 300px;
margin: 2rem;
padding-bottom: 1rem;
}
.card:empty {
width: 300px;
box-shadow: none;
margin: 2rem;
padding-bottom: 0;
}
.container {
padding-right: 15px;
padding-left: 15px;
margin-right: auto;
margin-left: auto;
}
.recipe-grid {
display: flex;
flex-wrap: wrap;
justify-content: space-around
}
<div class="container">
<div class="recipe-grid">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
<div class="card"></div>
<div class="card"></div>
<div class="card"></div>
</div>
</div>
更新
由于您使用justify-content:space-around，所以您也可以这样做，即在周围添加一个额外的包装，将其card居中，然后通过媒体查询，使包装根据每行项目的数量填充行。
请注意，由于不能CSS calc在媒体查询中使用，因此值基于1remequals 16px，因此第一个值的计算方式如下：300px +(2rem * 2) = 728px依此类推。因此，如果您的浏览器在元素上的默认字体大小为，则可以将其设置为，或者重新计算查询值root16px
.card { text-align: center;
box-shadow: 0 1px 3px 0 #d4d4d5, 0 0 0 1px #d4d4d5;
max-width: 300px;
margin: 2rem;
padding-bottom: 1rem;
}
.container {
padding-right: 15px;
padding-left: 15px;
margin-right: auto;
margin-left: auto;
}
.recipe-grid {
display: flex;
flex-wrap: wrap;
justify-content: flex-start;
}
.recipe-grid .card-wrapper {
display: flex;
justify-content: center;
width: 100%;
}
@media (min-width: 728px) { .recipe-grid .card-wrapper { width: 50%; } }
@media (min-width: 1092px) { .recipe-grid .card-wrapper { width: 33.333%; } }
@media (min-width: 1456px) { .recipe-grid .card-wrapper { width: 25%; } }
@media (min-width: 1820px) { .recipe-grid .card-wrapper { width: 20%; } }
<div class="container">
<div class="recipe-grid">
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
<div class="card-wrapper">
<div class="card">
<img src="https://www.edamam.com/web-img/40b/40bfe88c879112dfc1786938c6c36832.jpg">
<h3> Egg beef sandwich </h3>
<p> 604 kcal - totally vegan </p>
</div>
</div>
</div>
</div>
最后，我还想提到这些帖子，如何将一个flex容器居中，但如何将flex项左对齐，并且可以根据需要更改内容值的合理性元素数量输入（可能被认为是重复的），因为它很好地解释了Flexbox在包装和居中项目方面的工作方式，以及比其更多的解决方案我给了。
以上是 如何更改flexbox包装？ 的全部内容， 来源链接： utcz.com/qa/408574.html
