<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="refresh" content="3">
<title>Campo elemento</title>
<link rel="stylesheet" href="estilo.css">
<style>
.fr{
height: 10rem;
display: flex;
align-items: center;
justify-content: center;
color: white;
text-align: center;
font-size: 60px;
}
.cr{
background: linear-gradient(90deg, #80ff80 0%, cyan 16%,
magenta 50%, yellow 83%, #80f 100%);
background-size: 300% 300%;
animation: toggle 5s infinite;
}
@keyframes toggle{
from{
background-position: 0% 50%;
}
to{
background-position: 100% ;
}
}
</style>
</head>
<body>
<div class="fr cr">6A Tecnologia</div>
</body>
</html>
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