.allow{
    overflow: hidden;
    height: auto;
}
.prohibit{
    max-width: 100%;
    max-height: 100%;
    height: 100%;
    overflow: hidden;
    overflow-y: scroll;
    -webkit-overflow-scrolling: touch;
    will-change: transform;
    transition: all 450ms;
    backface-visibility: hidden;
    perspective: 1000;
    -webkit-perspective: 1000; /* Safari 和 Chrome */
}
.my-scroll {
    position: relative;
}
.scroll-top,
.scroll-bottom {
    color: #ccc;
}
.scroll-top {
    text-align: center;
    display: flex;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
}
.scroll-top div {
    display: flex;
    height: auto;
    width: 100%;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}
.scroll-top div i {
    flex: 1 0 100%;
    display: block;
    height: 0.4rem;
}
.my-scroll img.my-scroll-load {
    width: 0.6rem;
}
.scroll-top div p {
    flex: 1 0 100%;
}
.scroll-list {
    overflow: hidden;
    min-height: 100%;
}
.scroll-bottom {
    text-align: center;
    line-height: 40px;
}