.dream {
    z-index: 0;

    position: relative;

    box-sizing: border-box;
    padding: 0.5em 0;
}

.dream::before {
    content: "";
    z-index: -1;
    
    display: block;
    width: 100vw;

    position: absolute;
    top: 0;
    bottom: 0;
    left: calc(50% - 50vw);

    border-style: solid none;
    border-color: #33333377;
    background-image: linear-gradient(180deg, #000, 60%, #222);
    background-size: cover;
    background-origin: border-box;
}