CSS에서 글꼴 밑줄을 설정하는 방법

/*关键值*/
text-decoration: none;                     /*没有文本装饰*/
text-decoration: underline red;            /*红色下划线*/
text-decoration: underline wavy red;       /*红色波浪形下划线*/
/*全局值*/
text-decoration: inherit;
text-decoration: initial;
text-decoration: unset;

h1.under {
    text-decoration: underline;
}
h1.over {
    text-decoration: overline;
}
p.line {
    text-decoration: line-through;
}
p.blink {
    text-decoration: blink;
}
a.none {
    text-decoration: none;
}
p.underover {
    text-decoration: underline overline;
}