随笔记录方便自己和同路人查阅,学习CSS时最好先学会HTML。
#------------------------------------------------我是可耻的分割线-------------------------------------------
Opacity透明度1表示没有透明度
未加opacity显示
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div style="height: 5000px;background-color:green;"></div>
</body>
</html>
效果:
加opacity显示
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div style="height: 5000px;background-color:green;opacity:0.5;"></div>
</body>
</html>
效果: