对应的CSS文件中如下方式进行字体库的引用：
@font-face {
font-family: '造字工房情书';
src: url('../fonts/MFQingShu_Noncommercial-Regular.otf');
}
.website-purpose {
color: white;
font-size: 1.5em;
font-family: '造字工房情书';
text-align: center;
padding-top: 0.8em;
letter-spacing: 5px;
}