hi，我是温新，一名PHPer

陌生，因为是恐惧

Box Sizing 类用于计算元素总大小。

box-border

格式：<element></element>

说明：box-border 用于将元素的 box-sizing 设置为 border-box。当为元素设置宽度或高度时，它将告诉浏览器这个元素的宽度或高度已经包含了边框和内边距。

如：有一个 100px * 100px 的 div 元素，边框 2px，四边有内边距4px，将渲染为 100px * 100px，内部内容区域为 88px * 88px。

<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">html</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">lang</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"en"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">head</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">meta</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">charset</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"UTF-8"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">title</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span>Tailwind CSS box-border<span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">title</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">link</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">href</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"../dist/mystyle.css"</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">rel</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"stylesheet"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">head</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">body</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">h1</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">class</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"text-red-600 text-5xl font-bold"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span>box-border<span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">h1</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">div</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">class</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"w-28 h-28 bg-green-500 m4 p-4 box-border"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">        Tailwind CSS box-border</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">div</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">body</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">html</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span>

box-content

格式：<element></element>

说明：box-content 用于将元素的 box-sizing 设置为 content-box。当为元素设置指定的高度或宽度时，此该宽度或高度的基础上添加边框和内边距。

如：有一个 100px * 100px 的 div 元素，边框 2px，四边有内边距 4px，那么此时 div 实际大小为 112px * 112px，内部内容区域为 100px * 100px。

<span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important"></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">html</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">lang</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"en"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">head</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">meta</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">charset</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"UTF-8"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">title</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span>Tailwind CSS box-content<span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">title</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">link</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">href</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"../dist/mystyle.css"</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">rel</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"stylesheet"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">head</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">body</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">h1</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">class</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"text-red-600 text-5xl font-bold"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span>box-content<span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">h1</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"><</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">div</span> <span style="box-sizing: border-box;color: rgb(209, 154, 102) !important">class</span>=<span style="box-sizing: border-box;color: rgb(152, 195, 121) !important">"box-content w-28 h-28 p-4 border-4 bg-green-500 m4"</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">        Tailwind CSS box-content</span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px">    <span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">div</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">body</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span><br></br><span style="box-sizing: border-box;color: rgb(171, 178, 191);padding-right: 0.1px"><span class="cm-tag cm-bracket" style="box-sizing: border-box"></</span><span style="box-sizing: border-box;color: rgb(224, 108, 117) !important">html</span><span class="cm-tag cm-bracket" style="box-sizing: border-box">></span></span>