字体样式
<!--font-family: 字体font-size: 字体大小font-weight: 字体粗细color: 字体颜色--><style>body{font-family: "Arial Black", 楷体,serif;color: #cdbb21;}h1{font-size: 50px;}.p1{font-weight: bolder;}</style>
<!--字体风格 oblique斜体字体粗细 bolder 粗体字体大小字体样式--><style>p{font: oblique bolder 16px "楷体";}</style>
span标签
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title><style>#title1{font-size: 40px;}</style>
</head>
<body>
欢迎学习<span id="title1">Html</span>
</body>
</html>
https://www.bilibili.com/video/BV1YJ411a7dy?p=9
