<!DOCTYPE html>
<html>
<head>
<style>
.with-image {
    content: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAIAAABLbSncAAAAFklEQVQIHWPUFPzPgA0wYRMEiQ1OCQD4SAFJZaEkKQAAAABJRU5ErkJggg==);
}
</style>
</head>
<body>
<div class="with-image"></div>
<div class="with-image"></div>
<div class="with-image"></div>
</body>
</html>