📅  最后修改于: 2022-03-11 14:47:58.185000             🧑  作者: Mango
hr.hr-1 {
margin: 100px;
border: 0;
height: 1px;
background-image: linear-gradient(
to right,
rgba(0, 0, 0, 0),
rgba(0, 0, 0, 0.75),
rgba(0, 0, 0, 0)
);
}