<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>发射</title>
</head>
<style>
*{margin: 0;padding: 0;}
.bg{
500px;
height: 500px;
background: lightgrey;
margin: 0 auto;
position: relative;
overflow: hidden;
}
.light{
800px;
height: 10px;
background: yellow;
position: absolute;
left: -145px;
top: 240px;
}
</style>
<body>
<div class="bg">
<div class="light" style="transform: rotate(5deg);"></div>
<div class="light" style="transform: rotate(27.5deg);"></div>
<div class="light" style="transform: rotate(50deg);"></div>
<div class="light" style="transform: rotate(72.5deg);"></div>
<div class="light" style="transform: rotate(95deg);"></div>
<div class="light" style="transform: rotate(112.5deg);"></div>
<div class="light" style="transform: rotate(135deg);"></div>
<div class="light" style="transform: rotate(157.5deg);"></div>
</div>
</body>
</html>