Question

我使用bootstrap创建移动优先响应式布局，并设置了各种行和列，我根据不同类别的屏幕大小进行调整。

我想知道是否有纯引导样式类允许我应用和删除不同大小的边框，而不必创建自己的css媒体查询。

例如，如果我想在行中的第一列上有一个border-right，只有当它以中等大小浮动时...我知道这不是真正的代码，但是有什么东西给它同样的影响，我找不到傻瓜？

<div class="row">
    <div class="col-12 col-md-6 border border-top-0 border-right-0 border-bottom-0 border-left-0 border-md-right-1">
        <p>Lorem ipsum</p>
    </div>
    <div class="col-12 col-md-6">
        <p>Dolor sit amet</p>
    </div>
</div>

我也使用maxcdn css，因此无法进入sass。有什么建议吗？

Answer 1

不支持它。但是添加自己的代码将解决此问题。基于@sharan答案（thx！），如果您想一次定义所有边框，请进行一些修改。原始：https://stackoverflow.com/a/57089704/5677177

我的SCSS版本：

@each $breakpoint in map-keys($grid-breakpoints) {
  @include media-breakpoint-up($breakpoint) {
    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);

    .border#{$infix}-top {      border-top: $border-width solid $border-color !important; }
    .border#{$infix}-right {    border-right: $border-width solid $border-color !important; }
    .border#{$infix}-bottom {   border-bottom: $border-width solid $border-color !important; }
    .border#{$infix}-left {     border-left: $border-width solid $border-color !important; }

    .border#{$infix}-top-0 {    border-top: 0 !important; }
    .border#{$infix}-right-0 {  border-right: 0 !important; }
    .border#{$infix}-bottom-0 { border-bottom: 0 !important; }
    .border#{$infix}-left-0 {   border-left: 0 !important; }

    .border#{$infix}-x {
      border-left: $border-width solid $border-color !important;
      border-right: $border-width solid $border-color !important;
    }

    .border#{$infix}-y {
      border-top: $border-width solid $border-color !important;
      border-bottom: $border-width solid $border-color !important;
    }
    // support of .border-sm (-md, -lg, -xl)
    .border#{$infix} {
      border-top: $border-width solid $border-color !important;
      border-bottom: $border-width solid $border-color !important;
      border-left: $border-width solid $border-color !important;
      border-right: $border-width solid $border-color !important;
    }
    .border#{$infix}-0 {
      border-top: 0 !important;
      border-bottom: 0 !important;
      border-left: 0 !important;
      border-right: 0 !important;
    }
  }
}

我的CSS版本，已编译版本：

@media (min-width: 576px) {
  .border-sm-top {
    border-top: 1px solid #e3e7eb !important;
  }
  .border-sm-right {
    border-right: 1px solid #e3e7eb !important;
  }
  .border-sm-bottom {
    border-bottom: 1px solid #e3e7eb !important;
  }
  .border-sm-left {
    border-left: 1px solid #e3e7eb !important;
  }
  .border-sm-top-0 {
    border-top: 0 !important;
  }
  .border-sm-right-0 {
    border-right: 0 !important;
  }
  .border-sm-bottom-0 {
    border-bottom: 0 !important;
  }
  .border-sm-left-0 {
    border-left: 0 !important;
  }
  .border-sm-x {
    border-left: 1px solid #e3e7eb !important;
    border-right: 1px solid #e3e7eb !important;
  }
  .border-sm-y {
    border-top: 1px solid #e3e7eb !important;
    border-bottom: 1px solid #e3e7eb !important;
  }
  .border-sm {
    border-top: 1px solid #e3e7eb !important;
    border-bottom: 1px solid #e3e7eb !important;
    border-left: 1px solid #e3e7eb !important;
    border-right: 1px solid #e3e7eb !important;
  }
  .border-sm-0 {
    border-top: 0 !important;
    border-bottom: 0 !important;
    border-left: 0 !important;
    border-right: 0 !important;
  }
}

@media (min-width: 768px) {
  .border-md-top {
    border-top: 1px solid #e3e7eb !important;
  }
  .border-md-right {
    border-right: 1px solid #e3e7eb !important;
  }
  .border-md-bottom {
    border-bottom: 1px solid #e3e7eb !important;
  }
  .border-md-left {
    border-left: 1px solid #e3e7eb !important;
  }
  .border-md-top-0 {
    border-top: 0 !important;
  }
  .border-md-right-0 {
    border-right: 0 !important;
  }
  .border-md-bottom-0 {
    border-bottom: 0 !important;
  }
  .border-md-left-0 {
    border-left: 0 !important;
  }
  .border-md-x {
    border-left: 1px solid #e3e7eb !important;
    border-right: 1px solid #e3e7eb !important;
  }
  .border-md-y {
    border-top: 1px solid #e3e7eb !important;
    border-bottom: 1px solid #e3e7eb !important;
  }
  .border-md {
    border-top: 1px solid #e3e7eb !important;
    border-bottom: 1px solid #e3e7eb !important;
    border-left: 1px solid #e3e7eb !important;
    border-right: 1px solid #e3e7eb !important;
  }
  .border-md-0 {
    border-top: 0 !important;
    border-bottom: 0 !important;
    border-left: 0 !important;
    border-right: 0 !important;
  }
}

@media (min-width: 992px) {
  .border-lg-top {
    border-top: 1px solid #e3e7eb !important;
  }
  .border-lg-right {
    border-right: 1px solid #e3e7eb !important;
  }
  .border-lg-bottom {
    border-bottom: 1px solid #e3e7eb !important;
  }
  .border-lg-left {
    border-left: 1px solid #e3e7eb !important;
  }
  .border-lg-top-0 {
    border-top: 0 !important;
  }
  .border-lg-right-0 {
    border-right: 0 !important;
  }
  .border-lg-bottom-0 {
    border-bottom: 0 !important;
  }
  .border-lg-left-0 {
    border-left: 0 !important;
  }
  .border-lg-x {
    border-left: 1px solid #e3e7eb !important;
    border-right: 1px solid #e3e7eb !important;
  }
  .border-lg-y {
    border-top: 1px solid #e3e7eb !important;
    border-bottom: 1px solid #e3e7eb !important;
  }
  .border-lg {
    border-top: 1px solid #e3e7eb !important;
    border-bottom: 1px solid #e3e7eb !important;
    border-left: 1px solid #e3e7eb !important;
    border-right: 1px solid #e3e7eb !important;
  }
  .border-lg-0 {
    border-top: 0 !important;
    border-bottom: 0 !important;
    border-left: 0 !important;
    border-right: 0 !important;
  }
}

@media (min-width: 1200px) {
  .border-xl-top {
    border-top: 1px solid #e3e7eb !important;
  }
  .border-xl-right {
    border-right: 1px solid #e3e7eb !important;
  }
  .border-xl-bottom {
    border-bottom: 1px solid #e3e7eb !important;
  }
  .border-xl-left {
    border-left: 1px solid #e3e7eb !important;
  }
  .border-xl-top-0 {
    border-top: 0 !important;
  }
  .border-xl-right-0 {
    border-right: 0 !important;
  }
  .border-xl-bottom-0 {
    border-bottom: 0 !important;
  }
  .border-xl-left-0 {
    border-left: 0 !important;
  }
  .border-xl-x {
    border-left: 1px solid #e3e7eb !important;
    border-right: 1px solid #e3e7eb !important;
  }
  .border-xl-y {
    border-top: 1px solid #e3e7eb !important;
    border-bottom: 1px solid #e3e7eb !important;
  }
  .border-xl {
    border-top: 1px solid #e3e7eb !important;
    border-bottom: 1px solid #e3e7eb !important;
    border-left: 1px solid #e3e7eb !important;
    border-right: 1px solid #e3e7eb !important;
  }
  .border-xl-0 {
    border-top: 0 !important;
    border-bottom: 0 !important;
    border-left: 0 !important;
    border-right: 0 !important;
  }
}

Answer 2

Bootstrap不支持开箱即用的响应式边框。您可以按照此处有关引导程序中响应边框的说明进行操作-https://github.com/twbs/bootstrap/issues/23892#issuecomment-378172751

代码如下：

@each $breakpoint in map-keys($grid-breakpoints) {
  @include media-breakpoint-up($breakpoint) {
    $infix: breakpoint-infix($breakpoint, $grid-breakpoints);

    .border#{$infix}-top {      border-top: $border-width solid $border-color !important; }
    .border#{$infix}-right {    border-right: $border-width solid $border-color !important; }
    .border#{$infix}-bottom {   border-bottom: $border-width solid $border-color !important; }
    .border#{$infix}-left {     border-left: $border-width solid $border-color !important; }

    .border#{$infix}-top-0 {    border-top: 0 !important; }
    .border#{$infix}-right-0 {  border-right: 0 !important; }
    .border#{$infix}-bottom-0 { border-bottom: 0 !important; }
    .border#{$infix}-left-0 {   border-left: 0 !important; }

    .border#{$infix}-x {
      border-left: $border-width solid $border-color !important;
      border-right: $border-width solid $border-color !important;
    }

    .border#{$infix}-y {
      border-top: $border-width solid $border-color !important;
      border-bottom: $border-width solid $border-color !important;
    }
  }
}

Answer 3

不，没有用于应用和删除边框的纯引导样式类。您必须创建自己的规则来覆盖它们。

https://getbootstrap.com/

使用引导程序根据设备大小在元素上应用边框

3 个答案: