body {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100vh;
    margin: 0%;
    overflow: hidden;
}

header {
    margin: 0%;
}

footer {
    margin: 0%;
}

iframe {
    width: 100%;
    height: 100%;
    margin: 0%;
}

.main-content {
    width: 100%;
    height: 100vh;
}