!DOCTYPE html html lang = "en" head meta charset = "UTF-8" meta name = "viewport" content = "width=device-width,height=device-height" title 浏览器顶部loading(来自知乎) / title style .m-loading-bar { position : fixed ; top : 0 ; rig
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,height=device-height">
<title>浏览器顶部loading(来自知乎)</title>
<style>
.m-loading-bar {
position: fixed;
top: 0;
right: 0;
left: 0;
z-index: 101;
display: none;
height: 2px;
pointer-events: none;
background: #0084FF;
transform: translateX(-100%);
transform: translateX(-100%);
}
.m-loading-bar.active {
display: block;
animation: LoadingBarForward 1s ease-in-out 0.8s infinite;
animation: LoadingBarForward 1s ease-in-out 0.8s infinite;
}
@-webkit-keyframes LoadingBarForward {
0% {
transform: translateX(-100%);
transform: translateX(-100%);
}
40% {
transform: translateX(0);
transform: translateX(0);
}
60% {
transform: translateX(0);
transform: translateX(0);
}
100% {
transform: translateX(100%);
transform: translateX(100%);
}
}
@keyframes LoadingBarForward {
0% {
transform: translateX(-100%);
transform: translateX(-100%);
}
40% {
transform: translateX(0);
transform: translateX(0);
}
60% {
transform: translateX(0);
transform: translateX(0);
}
100% {
transform: translateX(100%);
transform: translateX(100%);
</style>
</head>
<body>
<div class="m-loading-bar active"></div>
</body>
</html>