效果图:
代码如下:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<style>
*{
margin: 0;
padding: 0;
}
.scroll-tool{
position: relative;
height: 56px;
padding: 12px 160px;
background-color: #f9f9f9;
}
.st-con{
font-size: 14px;
line-height: 30px;
text-