:root {
    background-color: black;
}

.page {
    color: aliceblue;
    font-family: Baskerville, "Times New Roman", "Liberation Serif", STFangsong, FangSong, FangSong_GB2312, "CWTEX\-F", serif;
    margin: 0 auto;
    width: 75%;
}

h1 {
    text-align: center;
    font-size: 3em;
    transition: color 1s;
}

h1:hover {
    text-align: center;
    color: red;
    font-size: 3em;
}