Beispiel:CSS-mask-4b.html
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<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Masken 3.b</title>
<style>
html, body {
margin: 0;
}
html {
height: calc(100vh - 0.5em);
overflow-y: hidden;
background: #000;
}
h1 {
margin-left: auto;
margin-right: auto;
left: 0;
right: 0;
text-align: center;
font-size: 4em;
color: orange;
z-index:2;
}
.hero {
mask-image: linear-gradient(to bottom, transparent, #000),
linear-gradient(to bottom, #000, transparent), linear-gradient(
to bottom,
transparent,
#000
), linear-gradient(to bottom, #000, transparent), linear-gradient(to
bottom, transparent, #000);
mask-size: 18% 70%;
mask-position: 0 100%, 25% 25%, 50% 50%, 75% 0, 100% 50%;
mask-repeat: no-repeat;
width: 100%
}
footer {
position: absolute;
bottom: 0em;
height: 10em;
width: 100%;
background-color: black;
color: white;
mask-image: linear-gradient(transparent, black 50%);
}
footer p {
padding: 5em 0 0 5em;;
}
footer a {
color: skyblue;
}
</style>
</head>
<body>
<h1>Marienburg mit mehreren Masken</h1>
<p><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d2/Marienburg_%28Malbork_castle%29.jpg/2560px-Marienburg_%28Malbork_castle%29.jpg" alt="Marienburg" class="hero"></p>
<footer><p>
<a rel="license" href="https://commons.wikimedia.org/wiki/File:Marienburg_(Malbork_castle).jpg">Marienburg (Malbork castle), Polen von Simon Ciminski</a> (CC BY-SA 3.0)</p>
</footer>
</body>
</html>