* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        "Microsoft YaHei",
        sans-serif;

    background: #fafafa;
    color: #222;
    line-height: 1.7;
}

.container {
    width: min(900px, calc(100% - 40px));
    margin: 0 auto;
}

header {
    background: #fff;
    border-bottom: 1px solid #eee;
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;

    height: 72px;
}

header h1 {
    margin: 0;
    font-size: 20px;
}

nav a {
    margin-left: 24px;
    text-decoration: none;
    color: #555;
}

nav a:hover {
    color: #000;
}

.hero {
    padding: 80px 0 60px;
}

.hero h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.hero p {
    color: #666;
}

article {
    background: #fff;
    padding: 36px;
    margin-bottom: 40px;
    border: 1px solid #eee;
    border-radius: 10px;
}

.date {
    color: #999;
    font-size: 14px;
}

footer {
    text-align: center;
    padding: 40px;
    color: #999;
}