Bootstrap 4 定义 HTML <pre> 元素的样式如下: 实例<div class="container"> <h1>Multiple Code Lines</h1> <p>For multiple lines of code, use the pre element:</p> <pre>Text in a pre element
is displayed in a fixed-width
font, and it preserves
both spaces and
line breaks. </pre> </div> 尝试一下 »
显示原有样式的块级元素
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