Bootstrap列浮动问题。DIV需要具有相同的高度。

Question

我有动态生成的内容，形成了3个类似这样的Bootstrap列...

<div class="col-md-4">
  <div class="article">
  content goes here
  </div>
</div>

问题在于，当列具有不同的内容时，不同的高度会破坏布局。

我该如何强制在每3个项目后启动一个清晰的行以避免这种情况？

所以基本上...

- lowercase

Answer 1

如何强制每三个项目之后开始清除一行以避免这种情况。

添加一个类并尝试使用.your-class:nth-child(3n) {clear: left;}。

- Francis Nepomuceno

---

这给了我 o ooo oo而不是 ooo ooo - lowercase

这个有效。 .clear-row:nth-child(3n+2) {clear: left;} 为什么需要+2？+1不行。 - lowercase

抱歉没有测试过。实际上应该是3n+1。检查一下标记，也许有一个杂乱的div。 - Francis Nepomuceno

如果您有一个响应式网格，您需要为每个断点执行不同的清除操作。更好的答案是不使用Bootstrap网格，而是使用不使用浮动的其他东西。 - Janne Annala

Answer 2

你可以尝试使用display:flex;来为一行中的div添加统一的高度，如此示例中所示：http://www.bootply.com/126437 HTML:

    <div class="container">
      <div class="row row-flex row-flex-wrap">
        <div class="col-md-4">
          <div class="article flex-col">
              content goes here
          </div>
        </div>
        <div class="col-md-4">
          <div class="article flex-col">
              content goes here
          </div>
        </div>
        <div class="col-md-4">
          <div class="article flex-col">
              content goes here
          </div>
        </div>
      </div>
    </div>

CSS：

.row-flex, .row-flex > div[class*='col-'] {  
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    flex:1 1 auto;
}

.row-flex-wrap {
    -webkit-flex-flow: row wrap;
    align-content: flex-start;
    flex:0;
}

.row-flex > div[class*='col-'], .container-flex > div[class*='col-'] {
     margin:-.2px; /* hack adjust for wrapping */
}

.container-flex > div[class*='col-'] div,.row-flex > div[class*='col-'] div {
    width:100%;
}


.flex-col {
    display: flex;
    display: -webkit-flex;
    flex: 1 100%;
    flex-flow: column nowrap;
}

- AndrewL64

---

这也可以工作。与下面Neps的答案相比，有什么优势吗？他的确意味着更少的代码。哈。 - lowercase

对于响应式网页设计，使用flex比使用floats和clearfix更加简洁和可取。正如在这里提到的：http://imstillreallybored.com/2013/08/building-a-responsive-grid-with-css3-flexbox-and-no-floats/"Flex允许复杂的布局和包含许多子元素的布局变得更加轻量级和易于编码（无需额外的清除浮动）"。 - AndrewL64

是的，Flexbox很好，只要您不需要支持IE 9及以下版本。 - Francis Nepomuceno

这似乎覆盖了使用Bootstrap响应式列宽的功能；我修改了您的标记示例，以包括“col-lg-1”用于大尺寸，但现在被忽略了：http://www.bootply.com/coAnc0jJ8j。 - huertanix

不错！特别是在动态内容方面，当您想显示可变数量的元素时。如果可以的话，我会点赞更多。 - Hinrich

Answer 3

只需在列的div中添加min-height以保持统一的布局，如下所示：

HTML：

<div class="row">
  <div class="col-md-4">
    <div class="article">
    content goes here
    </div>
  </div>
  <div class="col-md-4">
    <div class="article">
    content goes here
    </div>
  </div>
  <div class="col-md-4">
    <div class="article">
    content goes here
    </div>
  </div>
</div>

CSS：

.col-md-4 {
    min-height: 200px; /* change to the height value of the longest column in the row */
}

- AndrewL64

---

尝试过了，但内容（和高度）是动态生成的，因此无法设置最小高度，因为我不知道最大高度会是多少。 - lowercase

不，你需要将背景颜色添加到“article” div中的列div中，以便它们保持其内容的高度。col div的最小高度只会使下一行均匀对齐。 - AndrewL64

无法设置min-height，因为我不知道它是什么。 - lowercase

如果您在视觉示例中向上查看，例如，Box 1的绿色区域可以是“article” div，但下面的空间来自具有min-height的col div。 - AndrewL64

这些方框只是一个例子。实际上，div中填充了真正的内容。因此，我不需要绿色区域的高度是满的 - 我需要容器的高度都相同，这样它们就可以像应该的那样每3列浮动。绿色区域只是为了演示一些方框。 - lowercase

@lowercase 我添加了第二个答案，突出了一种不同的设置div等高度的方法。 - AndrewL64

Answer 4

使用 网格嵌套：

<div class='row'>
    <div class='col-md-4'>
    </div>
    <div class='col-md-4'>
    <div class='col-md-4'>
        <div class='row'>
            <div class='col-md-12'>
            </div>
        </div>
        <div class='row'>
            <div class='col-md-12'>
            </div>
        </div>
    </div>
</div>
<div class='row'>
    <div class='col-md-4'>
    </div>
    <div class='col-md-4'>
    </div>
    <div class='col-md-4'>
    </div>
</div

- Tui Popenoe

Answer 5

可能有些晚了，但也许有人会对此感到高兴：

如果你的所有列都具有相同的宽度，你可以按照以下方式操作： （使用这个CSS，你必须为所有断点指定大小）

//Used to generate the html, not relevant to this question
for(var i=0;i<50;i++){
  jQuery(".row").append(
    '<div class="col-xs-12 col-sm-6 col-md-4 col-lg-3 col-xl-3">'+
    '<h1>Title '+i+'</h1>'+
    '<img src="http://lorempixel.com/'+getRandomInt(300, 700)+'/'+getRandomInt(200, 800)+'">'+
  '</div>');
}

function getRandomInt(min, max) {
  return Math.floor(Math.random() * (max - min + 1)) + min;
}

@media (min-width: 0) and (max-width: 544px) {
    .row.same-width .col-xs-1:nth-child(12n + 13), html body > div.container ul.products .col-xs-1:nth-child(12n + 13),
    html body > div.container-fluid ul.products .col-xs-1:nth-child(12n + 13) {
        clear: left
    }

    .row.same-width .col-xs-2:nth-child(6n + 7), html body > div.container ul.products .col-xs-2:nth-child(6n + 7),
    html body > div.container-fluid ul.products .col-xs-2:nth-child(6n + 7) {
        clear: left
    }

    .row.same-width .col-xs-3:nth-child(4n + 5), html body > div.container ul.products .col-xs-3:nth-child(4n + 5),
    html body > div.container-fluid ul.products .col-xs-3:nth-child(4n + 5) {
        clear: left
    }

    .row.same-width .col-xs-4:nth-child(3n + 4), html body > div.container ul.products .col-xs-4:nth-child(3n + 4),
    html body > div.container-fluid ul.products .col-xs-4:nth-child(3n + 4) {
        clear: left
    }

    .row.same-width .col-xs-6:nth-child(2n + 3), html body > div.container ul.products .col-xs-6:nth-child(2n + 3),
    html body > div.container-fluid ul.products .col-xs-6:nth-child(2n + 3) {
        clear: left
    }

    .row.same-width .col-xs-12:nth-child(1n + 2), html body > div.container ul.products .col-xs-12:nth-child(1n + 2),
    html body > div.container-fluid ul.products .col-xs-12:nth-child(1n + 2) {
        clear: left
    }
}

@media (min-width: 544px) and (max-width: 768px) {
    .row.same-width .col-sm-1:nth-child(12n + 13), html body > div.container ul.products .col-sm-1:nth-child(12n + 13),
    html body > div.container-fluid ul.products .col-sm-1:nth-child(12n + 13) {
        clear: left
    }

    .row.same-width .col-sm-2:nth-child(6n + 7), html body > div.container ul.products .col-sm-2:nth-child(6n + 7),
    html body > div.container-fluid ul.products .col-sm-2:nth-child(6n + 7) {
        clear: left
    }

    .row.same-width .col-sm-3:nth-child(4n + 5), html body > div.container ul.products .col-sm-3:nth-child(4n + 5),
    html body > div.container-fluid ul.products .col-sm-3:nth-child(4n + 5) {
        clear: left
    }

    .row.same-width .col-sm-4:nth-child(3n + 4), html body > div.container ul.products .col-sm-4:nth-child(3n + 4),
    html body > div.container-fluid ul.products .col-sm-4:nth-child(3n + 4) {
        clear: left
    }

    .row.same-width .col-sm-6:nth-child(2n + 3), html body > div.container ul.products .col-sm-6:nth-child(2n + 3),
    html body > div.container-fluid ul.products .col-sm-6:nth-child(2n + 3) {
        clear: left
    }

    .row.same-width .col-sm-12:nth-child(1n + 2), html body > div.container ul.products .col-sm-12:nth-child(1n + 2),
    html body > div.container-fluid ul.products .col-sm-12:nth-child(1n + 2) {
        clear: left
    }
}

@media (min-width: 768px) and (max-width: 992px) {
    .row.same-width .col-md-1:nth-child(12n + 13), html body > div.container ul.products .col-md-1:nth-child(12n + 13),
    html body > div.container-fluid ul.products .col-md-1:nth-child(12n + 13) {
        clear: left
    }

    .row.same-width .col-md-2:nth-child(6n + 7), html body > div.container ul.products .col-md-2:nth-child(6n + 7),
    html body > div.container-fluid ul.products .col-md-2:nth-child(6n + 7) {
        clear: left
    }

    .row.same-width .col-md-3:nth-child(4n + 5), html body > div.container ul.products .col-md-3:nth-child(4n + 5),
    html body > div.container-fluid ul.products .col-md-3:nth-child(4n + 5) {
        clear: left
    }

    .row.same-width .col-md-4:nth-child(3n + 4), html body > div.container ul.products .col-md-4:nth-child(3n + 4),
    html body > div.container-fluid ul.products .col-md-4:nth-child(3n + 4) {
        clear: left
    }

    .row.same-width .col-md-6:nth-child(2n + 3), html body > div.container ul.products .col-md-6:nth-child(2n + 3),
    html body > div.container-fluid ul.products .col-md-6:nth-child(2n + 3) {
        clear: left
    }

    .row.same-width .col-md-12:nth-child(1n + 2), html body > div.container ul.products .col-md-12:nth-child(1n + 2),
    html body > div.container-fluid ul.products .col-md-12:nth-child(1n + 2) {
        clear: left
    }
}

@media (min-width: 992px) and (max-width: 1200px) {
    .row.same-width .col-lg-1:nth-child(12n + 13), html body > div.container ul.products .col-lg-1:nth-child(12n + 13),
    html body > div.container-fluid ul.products .col-lg-1:nth-child(12n + 13) {
        clear: left
    }

    .row.same-width .col-lg-2:nth-child(6n + 7), html body > div.container ul.products .col-lg-2:nth-child(6n + 7),
    html body > div.container-fluid ul.products .col-lg-2:nth-child(6n + 7) {
        clear: left
    }

    .row.same-width .col-lg-3:nth-child(4n + 5), html body > div.container ul.products .col-lg-3:nth-child(4n + 5),
    html body > div.container-fluid ul.products .col-lg-3:nth-child(4n + 5) {
        clear: left
    }

    .row.same-width .col-lg-4:nth-child(3n + 4), html body > div.container ul.products .col-lg-4:nth-child(3n + 4),
    html body > div.container-fluid ul.products .col-lg-4:nth-child(3n + 4) {
        clear: left
    }

    .row.same-width .col-lg-6:nth-child(2n + 3), html body > div.container ul.products .col-lg-6:nth-child(2n + 3),
    html body > div.container-fluid ul.products .col-lg-6:nth-child(2n + 3) {
        clear: left
    }

    .row.same-width .col-lg-12:nth-child(1n + 2), html body > div.container ul.products .col-lg-12:nth-child(1n + 2),
    html body > div.container-fluid ul.products .col-lg-12:nth-child(1n + 2) {
        clear: left
    }
}

@media (min-width: 1200px) {
    .row.same-width .col-xl-1:nth-child(12n + 13), html body > div.container ul.products .col-xl-1:nth-child(12n + 13),
    html body > div.container-fluid ul.products .col-xl-1:nth-child(12n + 13) {
        clear: left
    }

    .row.same-width .col-xl-2:nth-child(6n + 7), html body > div.container ul.products .col-xl-2:nth-child(6n + 7),
    html body > div.container-fluid ul.products .col-xl-2:nth-child(6n + 7) {
        clear: left
    }

    .row.same-width .col-xl-3:nth-child(4n + 5), html body > div.container ul.products .col-xl-3:nth-child(4n + 5),
    html body > div.container-fluid ul.products .col-xl-3:nth-child(4n + 5) {
        clear: left
    }

    .row.same-width .col-xl-4:nth-child(3n + 4), html body > div.container ul.products .col-xl-4:nth-child(3n + 4),
    html body > div.container-fluid ul.products .col-xl-4:nth-child(3n + 4) {
        clear: left
    }

    .row.same-width .col-xl-6:nth-child(2n + 3), html body > div.container ul.products .col-xl-6:nth-child(2n + 3),
    html body > div.container-fluid ul.products .col-xl-6:nth-child(2n + 3) {
        clear: left
    }

    .row.same-width .col-xl-12:nth-child(1n + 2), html body > div.container ul.products .col-xl-12:nth-child(1n + 2),
    html body > div.container-fluid ul.products .col-xl-12:nth-child(1n + 2) {
        clear: left
    }
}

.row img{
  width: 100%;
  height: auto;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/>

<div class="row same-width"></div>

如果您使用SCSS，则整个过程会更加简洁：

$grid-breakpoints: (
  // Extra small screen / phone
  xs: 0,
  // Small screen / phone
  sm: 544px,
  // Medium screen / tablet
  md: 768px,
  // Large screen / desktop
  lg: 992px,
  // Extra large screen / wide desktop
  xl: 1200px
) !default;

$grid-columns:               12 !default;

.row.same-width{
    $break-values: map-keys($grid-breakpoints);
    @each $breakpoint in $break-values{

        @if(index($break-values, $breakpoint) < length($break-values)){
            @media (min-width: #{map-get($grid-breakpoints, $breakpoint)}) and (max-width: #{map-get($grid-breakpoints, nth($break-values, index($break-values, $breakpoint)+1))}){
                @for $i from 1 through $grid-columns {
                    @if($grid-columns % $i == 0){
                        .col-#{$breakpoint}-#{$i}:nth-child(#{($grid-columns/$i)}n + #{($grid-columns/$i)+1}){
                            clear: left;
                        }
                    }
                }
            }
        }@else{
            @media (min-width: #{map-get($grid-breakpoints, $breakpoint)}){
                @for $i from 1 through $grid-columns {
                    @if($grid-columns % $i == 0){
                        .col-#{$breakpoint}-#{$i}:nth-child(#{($grid-columns/$i)}n + #{($grid-columns/$i)+1}){  
                            clear: left;
                        }
                    }
                }
            }
        }
    }
}

- Nico Hauser