急，现在有个需求有个头部固定下面有个滚动的canvas，往上滑动， - WXOPEN Club

急，现在有个需求，有个头部固定，下面有个滚动的canvas，往上滑动，

canvas还是挡住了头部，并且头部是用cover-view写的？有人能解决吗？

<cover-view class='yx_fix'>

<cover-view class='banner_img'>

<cover-view class='banner_con'>

<cover-view class='banner_con_logo'>

<cover-image src='{{playinfo.pic}}'></cover-image>

</cover-view>

<cover-view class='banner_name'>{{playinfo.name}}</cover-view>

</cover-view>

.yx_fix {

position: fixed;

top: 0;

left: 0;

background: rgba(0, 0, 0, 0.3);

z-index: 998;

width: 100%;

}

.banner_img {

width: 100%;

height: 294rpx;

background: #131313;

display: flex;

align-items: center;

justify-content: center;

}

.banner_con {

width: 400rpx;

display: flex;

align-items: center;

flex-direction: column;

}

.banner_con_logo {

width: 160rpx;

height: 160rpx;

border: 1px solid #ec4b3e;

/* border-radius: 50%; */

}

.banner_con_logo image {

width: 100%;

height: 100%;

border-radius: 50%;

position: relative;

z-index: 9;

}