<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<style>
progress[value]::-moz-progress-bar {
background-image: -moz-linear-gradient( 135deg, transparent 33%, rgba(0, 0, 0, 0.1) 33%,
rgba(0, 0, 0, 0.1) 66%, transparent 66%),
-moz-linear-gradient( top, rgba(255, 255, 255, 0.25),
rgba(0, 0, 0, 0.25)),
-moz-linear-gradient( left, #ff00f7, #4e922a);
background-size: 35px 20px, 100% 100%, 100% 100%;
}
</style>
</head>
<body>
<span>Loading:</span>
<progress value="35" max="100"></progress>
</body>
</html>