- markBlur要加给遮住的内容，不要加给遮罩层
- 如果要想遮罩层的内容显示，除了给高层级之外，还要写在有markBlur类的内容的前面。
.markBlur {
filter: blur(6px);
user-select: none;
}
.correction-process-mark {
display: flex;
flex-direction: column;
align-items: center;
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 724px;
background-color: rgba(255, 255, 255, 0.5);
z-index: 3;
}
https://blog.csdn.net/github_35631540/article/details/105436002
