CSS Striped Border Animation

02/08/2021

Contents

Demo

Full Screen

Code

HTML

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title>CSS Striped Border Animation</title>
    <link rel="stylesheet" type="text/css" href="https://demo.plantpot.works/assets/css/normalize.css">
    <link rel="stylesheet" href="https://use.typekit.net/opg3wle.css">
    <link rel="stylesheet" type="text/css" href="style.css">
  </head>
  <body>
    <div id="container">
      <div class="striped-border">
        <h1>Striped Border<br>Animation</h1>
      </div>
    </div>
  </body>
</html>

CSS

@charset "utf-8";
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  font-size: 16px;
}
body {
  font-family: futura-pt, sans-serif;
  -webkit-tap-highlight-color: rgba(0,0,0,0);
}
#container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100vh;
}
.striped-border {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 517px;
  height: 320px;
  background-color: #fff;
}
.striped-border::before {
  content: '';
  position: absolute;
  top: -10px;
  right: -10px;
  bottom: -10px;
  left: -10px;
  z-index: -1;
  background: repeating-linear-gradient(-45deg, #f00 0, #f00 10px, #fff 10px, #fff 20px, #00f 20px, #00f 30px, #fff 30px, #fff 40px);
  animation: anime 10s linear infinite;
}
.striped-border h1 {
  margin: 0;
  color: #3d3935;
  font-size: 3.5rem;
  letter-spacing: 2px;
  text-align: center;
}
@keyframes anime {
  0% {
    background-position: 0;
  }
  100% {
    background-position: 489px;
  }
}
@media screen and (max-width: 480px) {
  .striped-border {
    width: 206px;
    height: 160px;
  }
  .striped-border h1 {
    font-size: 2rem;
  }
}