那些遇到过的问题

如何使用 css-grids 将 div 居中？

nds*_*svw 2 html css responsive-design css-grid

你可以在这里看到我的项目：https : //jsfiddle.net/alphatier/byfvpq8h/2/

.i {
  grid-area: i;
}

.t {
  grid-area: t;
  margin: auto;
}

.grid {
  display: grid;
  grid-gap: 15px;
}

.box {
  display: grid;
  grid-gap: 4px;
  grid-template-areas: "i t";
  margin-bottom: 5px;
}

@media(min-width: 350px) {
  .grid {
    grid-template-columns: repeat(3, 100px);
  }
  .box {
    display: grid;
    grid-gap: 4px;
    grid-template-areas: "i" "t";
    text-align: center;
  }
  .t {
    margin: 0;
  }
}

@media(min-width: 475px) {
  .grid {
    grid-template-columns: repeat(4, 100px);
  }
}

@media(min-width: 590px) {
  .grid {
    grid-template-columns: repeat(5, 100px);
  }
}

@media(min-width: 705px) {
  .grid {
    grid-template-columns: repeat(6, 100px);
  }
}

@media(min-width: 820px) {
  .grid {
    grid-template-columns: repeat(7, 100px);
  }
}

@media(min-width: 935px) {
  .grid {
    grid-template-columns: repeat(8, 100px);
  }
}
Run Code Online (Sandbox Code Playgroud) 
<div class="grid">
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
</div>
Run Code Online (Sandbox Code Playgroud)

它显示二维码，并为每个二维码显示一个文本。

如果屏幕尺寸 < 350px，则布局针对智能手机进行了优化，我对此感到很高兴。但是如果屏幕尺寸 >= 350px，我不知道如何将它居中。

让我们在350px和之间选择一个屏幕尺寸475px，例如 460px。然后，您可以在一行中看到 3 个二维码及其文本。但在右侧，有很多空间。如何将这 3 个二维码居中？

编码

margin: auto
Run Code Online (Sandbox Code Playgroud)

对我不起作用，因为宽度div.grid是最大的。

Ric*_*Dam 5

添加justify-content: center到类.grid
https://jsfiddle.net/byfvpq8h/3/

.i {
  grid-area: i;
}

.t {
  grid-area: t;
  margin: auto;
}

.grid {
  display: grid;
  grid-gap: 15px;
  justify-content: center;
}

.box {
  display: grid;
  grid-gap: 4px;
  grid-template-areas: "i t";
  margin-bottom: 5px;
}

@media(min-width: 350px) {
  .grid {
    grid-template-columns: repeat(3, 100px);
  }
  .box {
    display: grid;
    grid-gap: 4px;
    grid-template-areas: "i" "t";
    text-align: center;
  }
  .t {
    margin: 0;
  }
}

@media(min-width: 475px) {
  .grid {
    grid-template-columns: repeat(4, 100px);
  }
}

@media(min-width: 590px) {
  .grid {
    grid-template-columns: repeat(5, 100px);
  }
}

@media(min-width: 705px) {
  .grid {
    grid-template-columns: repeat(6, 100px);
  }
}

@media(min-width: 820px) {
  .grid {
    grid-template-columns: repeat(7, 100px);
  }
}

@media(min-width: 935px) {
  .grid {
    grid-template-columns: repeat(8, 100px);
  }
}
Run Code Online (Sandbox Code Playgroud) 
<div class="grid">
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAG0AAABtCAYAAACr+O9WAAACt0lEQVR4nO3SwZKjUAxDUf7/p6cXmVVXaISeZCC5rnq7YMs+2bZt+3fF+12tvu/K+aaV13yggQYaaKAJaK1qoE1lVfJOZgFNyAoaaMtZQBOyPg4tdczEnIUlT/VNobWygAYaaBNZQAMNtIkst0FrlYMP2oklGwUaaLu/UfuAJhRoRbTUoZz8rSygiYdy8reygCYeysnfygKaeCgnfyvLZWipasx52h/IKdDELKDtDG/0BK08vNETtPLwRs+vRZt6rUNdhTb8QAMNNNBAe/PebnXTUkCOvnEB7lT3SnNQoL3qXmkOCrRX3SvNQYH2qi11iLs+8yiRvok/y84DzdnP6RO8I2jOfk6f4B1Bc/Zz+gTvCJqzn9MneMfzjVtLnj3Cnf4Mk3860EADDbShwzwezTn2ZOCz5Rzc6avODt0WNNBA+3M2aGa2o984fdXZI2jOcZ2ALTR11uqB3buYDzTQxAUS37gFGmhyftAW6uPRWkdozUlkc7K0CjTQDhuDFijQvhntKgCnrzt7KouZHzTQQDuVxcwPGmigncpi5p8BaBzFraksibvsPNBAA02eA9qJ+jg0J0xiIWfp1KGcvE7f4DegOXlBAw000EoLJY55JchViP+/Aw000EBbnXtlftDMuVfmr6FJWw3UFLSbJdFHmQNaMEuijzIHtGCWRB9lDmjBLIk+yhwJLXWs1eO2DtXKIh63tQ9oThbQxEMtLAkaaDdDa5VzqMZxU7MTOzs9QFuYndjZ6QHawuzEzk4P0BZmJ3Z2eoC2MDuxs9NDQlMWUsI9HS3xlBJ7gQYaaKCB9nA0Z45zvBaIUqCBBhpoQ3NAK6I53yizmwc+Kud2oIm/aRVooIE2UaCBpqO1Fmj0dP9UiT9UYi5ooK0XaKC97fm1aFMvuMDy7AaI0tf5BjTQQAMNNNA+Ce0HIleXZZmQRJwAAAAASUVORK5CYII="
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
  <div class="box"><img class="i" src="data:image/png;base64,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"
    /><span class="t">text about the qrcode</span></div>
</div>
Run Code Online (Sandbox Code Playgroud)

有关更多 CSS 网格提示，请参阅此
https://css-tricks.com/snippets/css/complete-guide-grid/

.grid {
  display: grid;
  grid-gap: 15px;
  justify-content: center;
}
Run Code Online (Sandbox Code Playgroud)

编辑 1：

这就是你开始的。 原始代码

使用justify-content: center给你这个。 证明内容中心

按照@abhishek-soni
Using的建议justify-content: space-around为您提供此信息。 在此处输入图片说明

选择更适合您的需求@Alpha

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