body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #224;
    color: white;
    font-family: 'Courier New', Courier, monospace;
}

iframe {
    height: 100vh;
    width: 100vw;
    border: none;
}

h1 {
    font-size: 5vh;
    width: 100%;
    text-align: center;
}

h2 {
    font-size: 3vh;
    width: 100%;
    text-align: center;
}

.center-box {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.padded {
    padding-left: 20vh;
    padding-right: 20vh;
}

.large {
    font-size: 5vh;
}

#page-indicator {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 1vh;
}

.bottom-right {
    position: absolute;
    bottom: 1vh;
    right: 1vh;
    font-size: 3vh;
}

.marked {
    background-color: rgba(0, 255, 0, 0.4);
}

.inst {
    text-shadow: white 0 0 10px;
    color:#2f2;
}

.anchor {
    color: cyan;
}

.ellipse {
    color: blue;
}

.flags {
    color: #F44;
}

.fade {
    opacity: 0.4;
}

.two-col {
    display: grid;
    grid-template-columns: auto min-content;
    width: 100vw;
}