纯css实现右下角按钮点击滚动返回页面顶部效果代码-html代码-BFW代码库

纯css实现右下角按钮点击滚动返回页面顶部效果代码

代码语言：html

代码描述：纯css实现右下角按钮点击滚动返回页面顶部效果代码，无js代码，纯css代码实现这个效果。

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">
  

  
  
  
<style>
body {
  display: grid;
  grid-template-columns: 1fr 0px; 
  font-family: system-ui, sans-serif;
  background: #eee;
}
.top {
  --offset: 100px; /* control when the button appear */
  
  position: sticky;
  bottom: 20px;      
  margin-right: 10px; 
  place-self: end;
  margin-top: calc(100vh + var(--offset));

  width: 60px;
  aspect-ratio: 1;
  background: #ff8b24;
  border-radius: 10px;
  font-size: 0;
}
.top:before {
  content: "";
  position: absolute;
  inset: 30%;
  transform: translateY(20%) rotate(-45deg);
  border-top: 5px solid #fff;
  border-right: 5px solid #fff;
}
h1 {
  font-size: 3rem;
}
p {
  font-size: 1.5rem;
  text-align:justify;
}
body > div {
  margin-inline: max(3px,50% - 800px/2);
}

/* remove the below if you don't want smooth scrolling */
html,
body {
	scroll-behavior: smooth;
}
</style>



</head>


  <body>
  <div>
    <!-- your content goes here  -->
    <h1>Main Title</h1>
    <p>
      Bear claw gummi bears danish ice cream halvah cotton candy pastry choc.........完整代码请登录后点击上方下载按钮下载查看