.frontCover {
    qrfullpage: 1;
}

.firstTitle {
    font-size: 1.5em;
    font-family: 宋体;
    text-align: center;
}

h2.secondTitle {
    font-size: 1.3em;
    font-family: 宋体;
    text-align: center;
}

.content {
    font-size: 1em;
    text-indent: 2em;
}