#pool-right-slide{
    position: absolute;
    float: right;
    right: 0;
    top: 10vh;
    width: 0%;
    height: 90vh;
    background: black;
    box-shadow: 0px 0px 5px 15px rgba(0, 0, 0, .4);
    
    transition: .5s ease-in-out;
    overflow: hidden;

    border-radius: 8px;
}

img#pool:hover ~ #pool-right-slide
{
    width: 74.8%;
    z-index: 5;    
    background: black !important;
}

img#pool:not(:hover) ~ #pool-right-slide
{       
    z-index: 5;
    background: black !important;
    transition: 1s 1s ease-out;
    box-shadow: 0px 0px 0px 0px rgba(0, 0, 0, 0);
}