<!DOCTYPE html>
<html lang="pt-BR">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Iframe 100%</title>
    <style>
        body, html {
            margin: 0;
            padding: 0;
            height: 100%;
            width: 100%;
        }
        iframe {
            border: none;
            height: 100%;
            width: 100%;
        }
    </style>
</head>
<body>
    <iframe src="//wsrcspfs05/vol1/WORK/CMR_UNIFICADO/CMR/Apoio/Apoio/ZFilesT3/Outros/t3/index.html"></iframe>
</body>
</html>