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76 lines
2.9 KiB
HTML
76 lines
2.9 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<title>宽高比</title>
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<base href="/" />
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<link rel="icon" type="image/png" href="favicon.png" />
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<link rel="stylesheet" href="bootstrap/css/bootstrap.min.css" />
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<link rel="stylesheet" href="css/app.css" />
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<script src="/plugs/holder/holder.min.js"></script>
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<style>
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.bd-example-ratios .ratio {
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display: inline-block;
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width: 10rem;
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color: var(--bs-secondary-color);
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background-color: var(--bs-tertiary-bg);
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border: var(--bs-border-width) solid var(--bs-border-color)
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}
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.bd-example-ratios .ratio>div {
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display: flex;
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align-items: center;
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justify-content: center
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="card mt-3">
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<div class="card-header .bg-dark-subtle">
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<strong>宽高比: </strong> 使用生成的伪元素使元素保持您选择的纵横比。非常适合根据父项的宽度响应式处理视频或幻灯片嵌入。
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</div>
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<div class="card-body">
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<h4>将父元素中的任何嵌入（如 ）包装为纵横比类。由于我们的通用选择器，直接子元素会自动调整大小。.ratio .ratio-21x9</h4>
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<div class="ratio ratio-21x9">
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<iframe src="http://www.ifiredoor.com" title="上海防火门" allowfullscreen></iframe>
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</div>
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</div>
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</div>
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<div class="card mt-3">
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<div class="card-header .bg-dark-subtle">
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<strong>纵横比: </strong> 纵横比可以使用修饰符类进行自定义。默认情况下，提供以下比率类：
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</div>
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<div class="card-body bd-example-ratios">
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<div class="ratio ratio-1x1">
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<div class="border border-2 bg-body-secondary">1x1</div>
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</div>
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<div class="ratio ratio-4x3">
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<div class="border border-2 bg-body-secondary">4x3</div>
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</div>
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<div class="ratio ratio-16x9">
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<div>16x9</div>
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</div>
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<div class="ratio ratio-21x9">
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<div>21x9</div>
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</div>
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</div>
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</div>
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<div class="card mt-3">
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<div class="card-header .bg-dark-subtle">
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<strong>自定义比例: </strong>
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</div>
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<div class="card-body bd-example-ratios">
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<div class="ratio" style="--bs-aspect-ratio: 50%;">
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<div>2x1</div>
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</div>
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</div>
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</div>
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</div>
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<script src="jquery/jquery-3.6.4.min.js"></script>
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<script src="bootstrap/js/bootstrap.bundle.min.js"></script>
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<script src="js/app.js"></script>
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</body>
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</html> |