纯css实现下载进度条动画效果-html代码-BFW代码库

纯css实现下载进度条动画效果

代码语言：html

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">

<title> Download Progress Bar &quot;Only CSS&quot;</title>

<style>
      @import url("https://fonts.googleapis.com/css?family=Saira+Semi+Condensed&display=swap");
* {
  font-family: "Saira Semi Condensed", sans-serif;
  transition: all 0.5s ease;
}

body {
  display: flex;
  flex-flow: row nowrap;
  align-items: center;
  justify-content: center;
}

.container {
  padding: 64px;
  position: relative;
}

.btn {
  background: #2f4ad0;
  padding: 8px 16px;
  color: #fff;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 0 8px 6px -6px #555;
}
.btn:hover {
  letter-spacing: 2px;
  box-shadow: none;
}
.btn i {
  margin: 0 10px 0 0;
}

#succes, .loader {
  background: #fff;
}

#succes {
  width: 100%;
  height: 100%;
  top: 50%;
  left: 50%;
  display: flex;
  position: absolute;
  flex-flow: row nowrap;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: all 0.5s ease;
  -webkit-transform: translate(-50%, -50%) scale(0, 0);
          transform: translate(-50%, -50%) scale(0, 0);
}
#succes a {
  top: 0;
  right: 6px;
  display: block;
  position: absolute;
  color: #000;
}
#succes span {
  background: #2fb65a;
  padding: 8px 16px;
  color: #fff;
  border-radius: 4px;
}
#succes span i {
  margin: 0 10px 0 0;
}

.loader {
  display: block;
  width: 100%;
  top: 0;
  left: 0;
  height: 100%;
  position: absolute;
  z-index: 1;
  visibility: hidden;
}
.loader:before {
  content: "";
  display: flex;
  width: 100%;
  top: 0;
  left: 0;
  height: 100%;
  position: absolute;
  flex-flow: row nowrap;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.loader:after {
  background: #2fb65a;
  width: 0;
  height: 3px;
  bottom: 0;
  left: 0;
  display: block;
  position: absolute;
  content: "";
}

#succes:target {
  -webkit-transform: translate(-50%, -50%) scale(1, 1);
          transform: translate(-50%, -50%) scale(1, 1);
}

#succes:target .loader {
  -webkit-animation: show 10s linear;
          animation: show 10s linear;
}
#succes:target .loader:before {
  -webkit-animation: percentage 10s linear;
          animation: percentage 10s linear;
}
#succes:target .loader:after {
  -webkit-animation: progress-bar 10s linear;
          animation: progress-bar 10s linear;
}

@-webkit-keyframes show {
  to {
    visibility: visible;
  }
}

@keyframes show {
  to {
    visibility: visible;
  }
}
@-webkit-keyframes percentage {
  0% {
    content: "0%";
  }
  1% {
    content: "1%";
  }
  2% {
    content: "2%";
  }
  3% {
    content: "3%";
  }
  4% {
    content: "4%";
  }
  5% {
    content: "5%";
  }
  6% {
    content: "6%";
  }
  7% {
    content: "7%";
  }
  8% {
    content: "8%";
  }
  9% {
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