style.css

*, *::before, *::after {
    margin: 0;
    padding: 0;
    border: none;
    font: inherit;
    color: inherit;
    box-sizing: border-box;
}

:root {
    font-family: 'Open Sans', sans-serif;
    color-scheme: light dark;
    --content-spacing-horizontal: 24px;
    --primary-color: #9D456D;
    --secondary-color: #BB5E55;
    --tertiary-color: #6D3B77;
}

h1, h2, h3 {
    font-family: Vollkorn, serif;
    font-weight: bold;
}

h1 { font-size: 80px; }
h2 { font-size: 40px; }
h3 { font-size: 26px; }
code { font-family: 'Source Code Pro', monospace; }
strong { font-weight: bold; }
a { text-decoration: underline; }
p { max-width: 700px; }

.subtitle {
    font-size: 24px;
    max-width: 650px;
}

header {
    padding: 60px var(--content-spacing-horizontal) 120px var(--content-spacing-horizontal);
}

header h1 {
    margin-bottom: 24px;
}

section {
    color: #fff;
    padding: 50px var(--content-spacing-horizontal) 70px var(--content-spacing-horizontal);
}

nav {
    padding: 20px var(--content-spacing-horizontal);
}

nav ul {
    list-style-type: none;
    display: grid;
    grid-auto-flow: column;
    gap: 42px;
    justify-content: right;
}

nav a {
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
}

nav a:hover {
    text-decoration: underline;
}

section:nth-of-type(3n + 1) {
    background-color: var(--primary-color);
}

section:nth-of-type(3n + 2) {
    background-color: var(--secondary-color);
}

section:nth-of-type(3n + 3) {
    background-color: var(--tertiary-color);
}

section h2 {
    margin-bottom: 32px;
}

section h2::after {
    content: '';
    display: block;
    width: 100px;
    height: 4px;
    background-color: currentColor;
    margin-top: 4px;
}

footer {
    padding: 18px var(--content-spacing-horizontal);
}

._container {
    margin: auto;
    width: 1024px;
    max-width: 100%;
}

.nuget-box {
    --nuget-box-horizontal-padding: 24px;
}

.nuget-box .panel:not(.-active) {
    display: none;
}

.nuget-box .tabs {
    list-style-type: none;
    display: grid;
    grid-auto-flow: column;
    justify-content: start;
    align-items: stretch;
    gap: 0 8px;
}

.nuget-box .tabs li {
    display: contents;
}

.nuget-box .tab {
    cursor: pointer;
    font-size: 14px;
    padding: 6px var(--nuget-box-horizontal-padding);
    border-radius: 6px 6px 0 0;
    background-color: var(--primary-color);
    transition: opacity .125s;
}

.nuget-box .tab:not([aria-active=true]) {
    opacity: .45;
}

.nuget-box .panel {
    background-color: var(--primary-color);
    padding: 16px var(--nuget-box-horizontal-padding);
    border-radius: 0 0 6px 6px;
}

/* block level elements */
h3:not(:last-child),
p:not(:last-child),
.feature-list .feature .icon:not(:last-child) {
    margin-bottom: 20px;
}

.feature-list {
    display: grid;
    list-style-type: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-list .feature {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.feature-list .feature a {
    align-self: flex-start;
}

.feature-list .feature .icon {
    width: 100px;
    height: 100px;
}

@media (prefers-color-scheme: dark) {
    :root {
        color: #fff;
    }
}

@media (max-width: 1024px) {
    .navigation-block ul {
        gap: 24px;
        justify-content: left;
    }
}

@media (max-width: 550px) {
    .feature-list {
        grid-template-columns: 1fr;
    }

    .nuget-box .tabs {
        grid-auto-flow: row;
        justify-content: stretch;
    }

    .nuget-box .tabs li:not(:first-child) .tab {
        border-radius: 0;
    }
}