.blog__list {
    position: relative;
}

.blog__list::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all .5s ease;
}

.blog__body.load .blog__list::after {
    opacity: 0.5;
    visibility: visible;
}