body {
    font-family: "Trebuchet MS", sans-serif;
    margin: 0;
    padding: 0;
}

main {
    width: 100vw;
    height: calc(100vh - var(--header-height) - var(--footer-height));
}

header {
    height: var(--header-height);
}

nav {
    width: 80%;
    text-align: right;
    margin-top: 1.5rem;
}

h1 {
    line-height: 1.25;
    margin-bottom: 0.8rem;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
}

.flex {
    display: flex;
}

.flex__center--horizontal {
    justify-content: center;
}

.flex__center--vertical {
    align-content: center;
    height: 100%;
    flex-wrap: wrap;
}

.flex__column {
    flex-direction: column;
}

.text__center {
    text-align: center;
}

.text__right {
    text-align: right;
}

.image__rounded {
    border-radius: 50%;
}

.mb--1 {
    margin-bottom: 1rem;
}

:root {
    --header-height: 60px;
    --footer-height: 60px;
}