📅  最后修改于: 2022-03-11 14:47:48.004000             🧑  作者: Mango
.more_video_img {
position: relative;
}
.playBtn {
position: absolute;
width: 40px;
height: 40px;
left: 50%;
top: 50%;
margin-left: -20px; /*half of the width */
margin-top: -20px; /*half of the height */
}