css+div实现border边框动画效果代码-html代码-BFW代码库

css+div实现border边框动画效果代码

代码语言：html

所属分类：动画

代码描述：css+div实现border边框动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">
  

  
  
  
<style>
@import url("https://fonts.googleapis.com/css?family=Montserrat:100,200,300,400,500,700");
/* global vars */
/* reset & base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  padding: 0;
  margin: 0;
  overflow-x: hidden;
}

html {
  font-size: 62.5%;
}

body {
  background-color: #1f2029;
  color: #ececec;
  font-family: "Montserrat", sans-serif;
  font-weight: 400;
  font-size: 1.4rem;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.container {
  display: flex;
  width: 100%;
  min-height: 100vh;
  align-items: center;
  flex-direction: column;
  overflow: hidden;
}
.container h1 {
  width: 100%;
  margin: 20vh 0 10vh 0;
  font-size: clamp(3rem, 4vw, 4rem);
  font-weight: 300;
  color: #ececec;
  text-align: center;
}
.container .avatar__box {
  display: flex;
  width: 20rem;
  height: 20rem;
  align-self: center;
  flex-direction: column;
  border-radius: 2rem;
  filter: drop-shadow(0.2rem 0.4rem 0.6rem rgba(0, 0, 0, 0.75));
  transition: 0.25s ease all;
  overflow: hidden;
}
.container .avatar__box .avatar__box-inner {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
  padding: 1em;
  background-color: rgba(92, 0, 0, 0.35);
  overflow: hidden;
}
.container .avatar__box .avatar__box-inner .line {
  position: absolute;
  background: #ff0000;
  filter: blur(0.2rem);
  opacity: 0.7;
}
.container .avatar__box .avatar__box-inner .line:nth-of-type(1) {
  top: 0.1rem;
  left: -100%;
  width: 100%;
  height: 1rem;
  border-top-left-radius: 100%;
  border-top-right-radius: 1rem;
  border-bottom-right-radius: 1rem;
  border-bottom-left-radius: 100%;
  -webkit-animation: animate-left 1s linear infinite;
          animation: animate-left 1s linear infinite;
}
.container .avatar__box .avatar__box-inner .line:nth-of-type(2) {
  top: -100%;
  right: 0.1rem;
  width: 1rem;
  height: 100%;
  border-top-left-radius: 100%;
  border-top-right-radius: 1rem;
  border-bottom-right-radius: 1rem;
  border-bottom-left-radius: 100%;
  -webkit-animation: animate-top 1s linear infinite;
          animation: animate-top 1s linear infinite;
  -webkit-animation-delay: 0.25s;
          animation-delay: 0.25s;
}
.container .avatar__box .avatar__box-inner .line:nth-of-type(3) {
  bottom: 0.1rem;
  right: -100%;
  width: 100%;
  height: 1rem;
  border-top-left-radius: 100%;
  border-top-right-radius: 1rem;
  border-bottom-right-radius: 1rem;
  border-bottom-.........完整代码请登录后点击上方下载按钮下载查看