body {
    padding: 0;
    margin: 0;
    background: black;
}

.navbar {
    background: forestgreen;
}

.nav-link,
.navbar-brand {
    color: #fff;
    cursor: pointer;
}

.nav-link {
    margin-right: 1em !important;
}

.nav-link:hover {
    color: #000;
}

.navbar-collapse {
    justify-content: flex-end;
}


pre {
    background: black;
    color: forestgreen;
    text-align: center;
    font-size:1vw;
}

iframe {
    position: absolute;
    top: 0px;
    bottom: 0px;
    right: 0px;
    width: 100%;
    border: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
/*    z-index: 999999;*/
    height: 90%;
}