@media (min-width: 769px) {
    .layout-flex {
        display: flex;
    }
    .w-menu {
        width: 20%;
    }
    .w-content {
        width: 80%;
    }
}
.new-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}
.back-to-top {
    padding-top: 12px
}