background 巧用 2，HTML代码在线实时编辑、实时预览

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" href="./style.css"> </head> <body> <div class="background1"></div> <div class="background2"></div> </body> </html>

            
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            body {
  background-color: #fefefe;
  height: 100vh;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  justify-items: center;
  align-items: center;
}

.background1 {
  width: fit-content;
  height: fit-content;
  font-weight: bold;
  font-size: 30px;
  padding: 8px 5px;
  background: repeating-linear-gradient(90deg, currentColor 0 8%, #0000 0 10%) 200% 100% / 200% 3px no-repeat;
  animation: l3 2s steps(6) infinite;
}
.background1::before {
  content: 'Loading...'
}
@keyframes l3 {
  to {
    background-position: 80% 100%
  }
}

.background2 {
  width: 200px;
  height: 200px;
  background: repeating-linear-gradient(red 0 10%, green 10% 20%, blue 20% 30%, gold 30% 40%);
}