:root {
    --color: #fff;
    --bgcolor: #201;
    --box-padding: 12px;
}

html {
    color: var(--color);
    background-color: var(--bgcolor);
    background-image: linear-gradient(#000, #201 50%);
    font:
        normal small/1.5 apple-system,
        system-ui,
        BlinkMacSystemFont,
        Segoe UI,
        Roboto,
        Helvetica Neue,
        Arial,
        sans-serif;
}

body {
    margin: 0;
}

h1,
h2,
h3 {
    line-height: 1.1;
    font-family: serif;
}

.skiplink {
    position: absolute;
    top: -5em;
    transition: top 0.4s ease-out;
    padding: 0.25em 0.5em;

    &:focus {
        top: 1em;
    }
}

main {
    margin: 0 auto;
    max-width: 33em;
}

.flx {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tree {
    color: crimson;
    align-items: center;
    justify-content: center;
    margin: 1em auto;
    display: flex;
    flex-direction: column;
    gap: 0.75em;

    > * {
        padding: 1em 2em;
        border-radius: 5px;
        background-color: rgba(128, 128, 128, 0.1);
    }

    > :nth-child(even) {
        text-align: right;
    }
}

.landing {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: #000;
    padding: 3em;
    box-sizing: border-box;
}

a {
    color: #fff;
    text-decoration: none;
}