1,标签选择器(在段落里)
<style>p{color:pink;font-size:49px;font-family:"宋体";text-decoration:none;
}
</style><body><p>helloworld</p>
</body>2.类名选择器
<style>.a{color:pink;font-size:49px;font-family:"宋体";text-decoration:none;
}
</style>
<body><p class="a">helloworld</p>
</body>
3.id选择器
<style>#a{color:pink;font-size:49px;font-family:"宋体";text-decoration:none;
}
</style>
<body><p id="a">helloworld</p>
</body>