停用网格内的边框，只留下一个框

Question

我不擅长CSS，我只想只删除框内的边缘，只留下外边缘。.grid-container {  display: grid;  grid-template-columns: auto auto auto;  background-color: #2196F3;  padding: 10px;}.grid-item {  background-color: rgba(255, 255, 255, 0.8);  border: 1px solid rgba(0, 0, 0, 0.8);  padding: 20px;  font-size: 30px;  text-align: center;}<h1>Grid Elements</h1><p>A Grid Layout must have a parent element with the <em>display</em> property set to <em>grid</em> or <em>inline-grid</em>.</p><p>Direct child element(s) of the grid container automatically becomes grid items.</p><div class="grid-container">  <div class="grid-item">1</div>  <div class="grid-item">2</div>  <div class="grid-item">3</div>  <div class="grid-item">4</div>  <div class="grid-item">5</div>  <div class="grid-item">6</div>  <div class="grid-item">7</div>  <div class="grid-item">8</div>  <div class="grid-item">9</div></div>

Answer 1

您可以通过以下方法来实现此目的：删除网格项上的边框并使用容器上的大纲属性：

.grid-container {

  display: grid;

  grid-template-columns: auto auto auto;

  background-color: #2196F3;

  padding: 10px;

  outline: 1px solid black;

  outline-offset: -10px;

}

.grid-item {

  background-color: rgba(255, 255, 255, 0.8);

  padding: 20px;

  font-size: 30px;

  text-align: center;

}

<h1>Grid Elements</h1>

<p>A Grid Layout must have a parent element with the <em>display</em> property set to <em>grid</em> or <em>inline-grid</em>.</p>

<p>Direct child element(s) of the grid container automatically becomes grid items.</p>

<div class="grid-container">

  <div class="grid-item">1</div>

  <div class="grid-item">2</div>

  <div class="grid-item">3</div>

  <div class="grid-item">4</div>

  <div class="grid-item">5</div>

  <div class="grid-item">6</div>

  <div class="grid-item">7</div>

  <div class="grid-item">8</div>

  <div class="grid-item">9</div>

</div>

Answer 2

这是你想要的？

为此，您只需创建一个带边框的容器框。

.grid-container {

  background-color: #2196F3;

  padding: 10px;

}

.grid-item {

  background-color: rgba(255, 255, 255, 0.8);

  padding: 20px;

  font-size: 30px;

  text-align: center;

}

.container {

  border: 1px solid rgba(0, 0, 0, 0.8);

  grid-template-columns: auto auto auto;

  display: grid;

}

<h1>Grid Elements</h1>

<p>A Grid Layout must have a parent element with the <em>display</em> property set to <em>grid</em> or <em>inline-grid</em>.</p>

<p>Direct child element(s) of the grid container automatically becomes grid items.</p>

<div class="grid-container">

  <div class="container">

    <div class="grid-item">1</div>

    <div class="grid-item">2</div>

    <div class="grid-item">3</div>

    <div class="grid-item">4</div>

    <div class="grid-item">5</div>

    <div class="grid-item">6</div>

    <div class="grid-item">7</div>

    <div class="grid-item">8</div>

    <div class="grid-item">9</div>

  </div>

</div>

Answer 3

您还可以像这样更改您的代码：

.grid-container {

  display: grid;

  grid-template-columns: auto auto auto;

  background-color: #2196F3;

  padding: 0;

  border: 1px solid rgba(0, 0, 0, 0.8);

  box-shadow: 0 0 0 10px #2196F3;

}

.grid-item {

  background-color: rgba(255, 255, 255, 0.8);

  padding: 20px;

  font-size: 30px;

  text-align: center;

}

<h1>Grid Elements</h1>

<p>A Grid Layout must have a parent element with the <em>display</em> property set to <em>grid</em> or <em>inline-grid</em>.</p>

<p>Direct child element(s) of the grid container automatically becomes grid items.</p>

<div class="grid-container">

  <div class="grid-item">1</div>

  <div class="grid-item">2</div>

  <div class="grid-item">3</div>

  <div class="grid-item">4</div>

  <div class="grid-item">5</div>

  <div class="grid-item">6</div>

  <div class="grid-item">7</div>

  <div class="grid-item">8</div>

  <div class="grid-item">9</div>

</div>