边框动画

发布时间 2025-12-05 22:06:37

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项目来源于抖音博主 - 前端斌少

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此演示仅在桌面端浏览器中可用

html

     html
    
  
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <link rel="stylesheet" href="./style.css" />
  </head>
  <body>
    <div class="wrap">
      <div class="box">
        <h1>Border Animation</h1>
        <span class="border-top"></span>
        <span class="border-right"></span>
        <span class="border-bottom"></span>
        <span class="border-left"></span>
      </div>
    </div>
  </body>
</html>

css

     css
    
  
.wrap {
  width: 400px;
  height: 200px;
  margin: 100px auto;
}

.box {
  position: relative;
  padding: 20px 35px;
  overflow: hidden;
  border-radius: 5px;
}

.border-top {
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(to right, #ec107e, #fcc23f);
  animation: animate-border-top 2s linear infinite;
}

h1 {
  text-align: center;
}

@keyframes animate-border-top {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.border-right {
  position: absolute;
  top: 0;
  right: 0;
  height: 100%;
  width: 3px;
  opacity: 0;
  background: linear-gradient(to bottom, #ec107e, #fcc23f);
  animation: animate-border-right 2s linear infinite;
  animation-delay: 1s;
}

@keyframes animate-border-right {
  0% {
    opacity: 0;
    transform: translateY(-100%);
  }
  0.1% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    transform: translateY(100%);
  }
}

.border-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(to left, #ec107e, #fcc23f);
  animation: animate-border-bottom 2s linear infinite;
}

@keyframes animate-border-bottom {
  0% {
    transform: translateX(100%);
  }
  100% {
    transform: translateX(-100%);
  }
}

.border-left {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 3px;
  opacity: 0;
  background: linear-gradient(to top, #ec107e, #fcc23f);
  animation: animate-border-left 2s linear infinite;
  animation-delay: 1s;
}

@keyframes animate-border-left {
  0% {
    opacity: 0;
    transform: translateY(100%);
  }
  0.1% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    transform: translateY(-100%);
  }
}

#Css #动画