html - 如何使用 Bootstrap 3 制作漂亮的按钮矩阵？

Question

我有这样的东西:

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">

<div class="container">
  <div class="row">
    <div class="col-sm-6">

      <div class="btn-group">
        <button type="button" class="btn btn-default">Button 1</button>
        <button type="button" class="btn btn-default">Button 2</button>
        <button type="button" class="btn btn-default">Button 3</button>
      </div>

      <div class="btn-group">
        <button type="button" class="btn btn-default">Button 4</button>
        <button type="button" class="btn btn-default">Button 5</button>
        <button type="button" class="btn btn-default">Button 6</button>
      </div>

      <div class="btn-group">
        <button type="button" class="btn btn-default">Button 7</button>
        <button type="button" class="btn btn-default">Button 8</button>
        <button type="button" class="btn btn-default">Button 9</button>
      </div>

    </div>

    <div class="col-sm-6">
    </div>
  </div>
</div>

我想要一个 3x3 的按钮矩阵。还有一点，左边和右边必须像这个例子(直线):

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">

<div class="container">
  <div class="btn-group-vertical">
    <button type="button" class="btn btn-default">button</button>
    <button type="button" class="btn btn-default">button</button>
    <button type="button" class="btn btn-default">button</button>
  </div>
</div>

我怎样才能做到？也许我需要添加一些 Bootstrap 类或编辑 CSS 文件？

Answer 1

一组按钮+几个伪类

1. .btn-group 类仅使用一个 block 。

2. 使用伪类应用一组 CSS 属性:

• :first-child
• :last-child
• :nth-child()
• :nth-last-child()

1. clear: left; 属性强制按钮开始矩阵的新行。这是因为 .btn 类具有 float: left; 属性。

2. 以与 bootstrap.css 中描述的 btn-group 类类似的方式设置 border-radius 和 margin 属性文件。

Bootstrap 3 的三列按钮矩阵

https://codepen.io/glebkema/pen/bGWWMRz

@import "https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css";

/* Arrange buttons */
.btn-matrix>.btn {
  width: 33%; /* force buttons to have the same width regardless of content */
}
.btn-matrix>.btn:nth-child(3n + 4) {
  clear: left; /* force the button to start a new row of the matrix
                  (because .btn adds the `float: left;` property) */
  margin-left: 0; /* because .btn-group adds `margin-left: -1px;` to all buttons */
}
.btn-matrix>.btn:nth-child(n + 4) {
  margin-top: -1px; /* superimpose borders of the buttons from adjacent rows */
}

/* Fix border radius */
.btn-matrix>.btn:first-child {
  border-bottom-left-radius: 0;
}
.btn-matrix>.btn:nth-child(3) {
  border-top-right-radius: 4px !important;
}
.btn-matrix>.btn:nth-last-child(3) {
  border-bottom-left-radius: 4px !important;
}
.btn-matrix>.btn:last-child {
  border-top-right-radius: 0;
}

/* Decorations */
.btn-matrix {
  margin: 20px;
}

<div class="btn-group btn-matrix">
  <button type="button" class="btn btn-default">Button 1</button>
  <button type="button" class="btn btn-default">Button 2</button>
  <button type="button" class="btn btn-default">Button 3</button>
  <button type="button" class="btn btn-default">Button 4</button>
  <button type="button" class="btn btn-default">Button 5</button>
  <button type="button" class="btn btn-default">Button 6</button>
  <button type="button" class="btn btn-default">Button 7</button>
  <button type="button" class="btn btn-default">Button 8</button>
  <button type="button" class="btn btn-default">Button 9</button>
  <button type="button" class="btn btn-default">Button 10</button>
  <button type="button" class="btn btn-default">Button 11</button>
  <button type="button" class="btn btn-default">Button 12</button>
  <button type="button" class="btn btn-default">Button 13</button>
  <button type="button" class="btn btn-default">Button 14</button>
  <button type="button" class="btn btn-default">Button 15</button>
</div>

使用 Bootstrap 3 的 X×Y 矩阵

代码只依赖于X:

.btn-matrix > .btn {
  width: (100/X)%;
}
.btn-matrix > .btn:nth-child(Xn+X+1) {
  clear: left;
  margin-left: 0;
}
.btn-matrix > .btn:nth-child(n+X+1) {
  margin-top: -1px;
}

.btn-matrix > .btn:first-child {
  border-bottom-left-radius: 0;
}
.btn-matrix > .btn:nth-child(X) {
  border-top-right-radius: 4px !important;
}
.btn-matrix > .btn:nth-last-child(X) {
  border-bottom-left-radius: 4px !important;
}
.btn-matrix > .btn:last-child {
  border-top-right-radius: 0;
}

Bootstrap 4 或 5 的三列按钮矩阵

https://codepen.io/glebkema/pen/ZEKKoJG

@import "https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/5.0.2/css/bootstrap.min.css";

/* Arrange buttons */
.btn-matrix {
   flex-wrap: wrap; /* allow buttons to jump to another row */
}
.btn-matrix > .btn {
   width: 33%; /* force buttons to have the same width regardless of content */
}
.btn-matrix > .btn:nth-child(3n + 4) {
   margin-left: 0; /* because .btn-group adds `margin-left: -1px;` to all buttons */
}
.btn-matrix > .btn:nth-child(n + 4) {
   margin-top: -1px; /* superimpose borders of the buttons from adjacent rows */
}

/* Fix border radius */
.btn-matrix > .btn:first-child {
   border-bottom-left-radius: 0;
}
.btn-matrix > .btn:nth-child(3) {
   border-top-right-radius: 4px !important;
}
.btn-matrix > .btn:nth-last-child(3) {
   border-bottom-left-radius: 4px !important;
}
.btn-matrix > .btn:last-child {
   border-top-right-radius: 0;
}

/* Decorations */
.btn-matrix {
   margin: 20px;
   max-width: 500px;
}

<div class="btn-group btn-matrix" role="group" aria-label="Three Column Button Matrix">
  <button type="button" class="btn btn-outline-primary">Button 1</button>
  <button type="button" class="btn btn-outline-primary">Button 2</button>
  <button type="button" class="btn btn-outline-primary">Button 3</button>
  <button type="button" class="btn btn-outline-primary">Button 4</button>
  <button type="button" class="btn btn-outline-primary">Button 5</button>
  <button type="button" class="btn btn-outline-primary">Button 6</button>
  <button type="button" class="btn btn-outline-primary">Button 7</button>
  <button type="button" class="btn btn-outline-primary">Button 8</button>
  <button type="button" class="btn btn-outline-primary">Button 9</button>
  <button type="button" class="btn btn-outline-primary">Button 10</button>
  <button type="button" class="btn btn-outline-primary">Button 11</button>
  <button type="button" class="btn btn-outline-primary">Button 12</button>
  <button type="button" class="btn btn-outline-primary">Button 13</button>
  <button type="button" class="btn btn-outline-primary">Button 14</button>
  <button type="button" class="btn btn-outline-primary">Button 15</button>
</div>

使用 Bootstrap 4 或 5 的 X×Y 矩阵

代码只依赖于X:

.btn-matrix {
  flex-wrap: wrap;
}
.btn-matrix > .btn {
  width: (100/X)%;
}
.btn-matrix > .btn:nth-child(Xn+X+1) {
  margin-left: 0;
}
.btn-matrix > .btn:nth-child(n+X+1) {
  margin-top: -1px;
}

.btn-matrix > .btn:first-child {
  border-bottom-left-radius: 0;
}
.btn-matrix > .btn:nth-child(X) {
  border-top-right-radius: 4px !important;
}
.btn-matrix > .btn:nth-last-child(X) {
  border-bottom-left-radius: 4px !important;
}
.btn-matrix > .btn:last-child {
  border-top-right-radius: 0;
}