html, body {
    height: 100%;
    width: 100%;
    background-color: #222;
    margin: 0;
    padding: 0;
}

main {
    position: fixed;
    overflow: auto;
    padding: 20px;
    inset: 0;
    color: white;
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-gap: 20px;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-gap: 20px;
}

.button {
    color: inherit;
    text-decoration: inherit;
    transform: scale(1);
    opacity: 1;
    transition: transform 200ms;
}

.button:hover {
    opacity: .5;
}

.button:active {
    transform: scale(.95);
}

.tagline {
    opacity: .5;
    margin-top: 0;
}

a {
    color: #ffa0a0;
}

a:hover {
    opacity: .75;
}

a:focus, a:active {
    opacity: .5;
}

.hr-style-01 {
    border-bottom: none;
    border-top: 1px solid white;
}

.big-button {
    transition: color 200ms, background 200ms, opacity 200ms;
    color: white;
    background: #333;
    border: 1px solid white;
    padding: 10px 20px;
    text-decoration: none;
    margin-top: 10px;
    opacity: 1 !important;
    border-radius: 5px;
}

.big-button:hover {
    color: #333;
    background: white;
}

.big-button:active {
    opacity: .5 !important;
}

.stand {
    padding: 5px;
    margin-left: -20px;
    margin-right: -20px;
    background: #333;
}

.stand-strong {
    padding: 20px;
}