body {
    width: 100%;
    height: 100%;
    margin: 0;
    color: rgba(0,0,0,.65);
    font-size: 13px;
    font-family: -apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;
    font-variant: tabular-nums;
    line-height: 1.5;
    background-color: #fff;
    font-feature-settings: "tnum";
}
.markdown-body {
    width: 70%;
    margin: 50px auto;
}
.markdown-body h1 {
    text-align: center;
}
h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: .5em;
    color: rgba(0,0,0,.85);
    font-weight: 500;
}
p {
    margin-top: 0;
    margin-bottom: 1em;
    display: block;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}
b, strong {
    font-weight: bolder;
}
.markdown-body .underline {
    text-decoration: underline;
}
.markdown-body > :last-child {
    text-align: right;
}