<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS Shooting Stars Animation</title>
    <link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
    <section>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
        <span></span>
    </section>
</body>
</html>

CSS

*
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body
{
    overflow: hidden;
}
section
{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: url(bg.jpg);
    background-position-x: center;
    background-size: cover; 
    animation: animateBg 50s linear infinite;
}
@keyframes animateBg
{
    0%,100%
    {
        transform: scale(1);
    }
    50%
    {
        transform: scale(1.2);
    }
}
span
{
    position: absolute;
    top: 50%;
    left: 50%;
    width :4px;
    height: 4px;
    background: #fff;
    border-radius: 50px;
    box-shadow: 0 0 0 4px rgba(255,255,255,0.1),
    0 0 0 8px rgba(255,255,255,0.1),
    0 0 20px rgba(255,255,255,1);
    animation: animate 3s linear infinite;
}
span::before
{
    content: "";
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 300px;
    height: 1px;
    background: linear-gradient(90deg,#fff,transparent);
}
@keyframes animate
{
    0%
    {
        transform: rotate(315deg) translateX(0);
        opacity: 1;
    }
    70%
    {
        opacity: 1;
    }
    100%
    {
        transform: rotate(315deg) translateX(-1000px);
        opacity: 0;
    }
}
span:nth-child(1)
{
    top: 0;
    right: 0;
    animation-delay: 0;
    animation-duration: 1s;
}
span:nth-child(2)
{
    top: 0;
    right: 80px;
    left: initial;
    animation-delay: 0.2s;
    animation-duration: 3s;
}
span:nth-child(3)
{
    top: 80px;
    right: 0;
    left: initial;
    animation-delay: 0.4s;
    animation-duration: 2s;
}
span:nth-child(4)
{
    top: 0;
    right: 180px;
    left: initial;
    animation-delay: 0.6s;
    animation-duration: 1.5s;
}
span:nth-child(5)
{
    top: 0;
    right: 400px;
    left: initial;
    animation-delay: 0.8s;
    animation-duration: 2.5s;
}
span:nth-child(6)
{
    top: 0;
    right: 600px;
    left: initial;
    animation-delay: 1s;
    animation-duration: 3s;
}
span:nth-child(7)
{
    top: 300px;
    right: 0;
    left: initial;
    animation-delay: 1.2s;
    animation-duration: 1.75s;
}
span:nth-child(8)
{
    top: 0;
    right: 700px;
    left: initial;
    animation-delay: 1.4s;
    animation-duration: 1.25s;
}
span:nth-child(9)
{
    top: 0;
    right: 1000px;
    left: initial;
    animation-delay: 0.75s;
    animation-duration: 2.25s;
}
span:nth-child(10)
{
    top: 0;
    right: 450px;
    left: initial;
    animation-delay: 2.75s;
    animation-duration: 2.25s;
}