摘要：
CSS--媒体查询设置根节点字体大小/*font-size*/@mediaonlyscreenand（min-320px）和(
<html>
<head>
<title>CSS----媒体查询设置根节点字体大小</title>
<meta name="keyword" content="CSS----媒体查询设置根节点字体大小">
<meta name='discription' content="CSS----媒体查询设置根节点字体大小">
<style>
/* 字体大小 */
@media only screen and (min-320px) and (orientation:portrait) {
html {
font-size: 12px;
}
}
@media only screen and (min-360px) and (orientation:portrait) {
html {
font-size: 15px;
}
}
@media only screen and (min-400px) and (orientation:portrait) {
html {
font-size: 18px;
}
}
@media only screen and (min-600px) and (orientation:portrait) {
html {
font-size: 24px;
}
}
@media only screen and (max-768px) and (orientation:portrait) {}
@media only screen and (min-480px) and (orientation:landscape) {
html {
font-size: 12px;
}
}
@media only screen and (min-580px) and (orientation:landscape) {
html {
font-size: 13px;
}
}
@media only screen and (min-730px) and (orientation:landscape) {
html {
font-size: 16px;
}
}
@media only screen and (min-900px) and (orientation:landscape) {
html {
font-size: 21px;
}
}
@media only screen and (min-992px) {
html {
font-size: 24px;
}
}
</style>
</head>
<body>
</body>
</html>