* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

html {
    height: 100%;
    font-family: "微软雅黑", sans-serif;
    font-size: 16px;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

header {
    flex-grow: 1;
    display: flex;
    align-items: center;
    padding: 1rem;
}

header h1 {
    margin-bottom: 2rem;
    font-size: 5rem;
    font-weight: 400;
}

footer {
    flex-grow: 0;
    padding: 1rem;
}

footer p {
    color: #6c757d;
    font-size: 0.8rem;
    text-align: center;
}

a {
    text-decoration: none;
}

a:link,
a:visited {
    color: inherit;
}

a:hover,
a:active {
    color: #0d6efd;
}