:root{
    --thumbnail-color: hsl(183, 100%, 15%);
    --inner-mp-color: hsl(172, 67%, 45%);
    --bg-mp-color: hsl(183, 100%, 15%);
    --thumb-bg: #f3f3f3;
}
body .controllmenu{
    width: 17rem;
    height: 8rem;
    position: absolute;
    left: 0;
    top: 50%;
    translate: -16rem -50%;
    overflow: hidden;
    border-top-right-radius: .5rem;
    border-bottom-right-radius: .5rem;
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    box-shadow: 0 0 1rem 0 gray;
    background-color: var(--thumb-bg);
    transition: 1s;

    font-size: 1rem;
}
body .controllmenu:hover{
    translate: 0 -50%;
}
body .controllmenu:hover span.vbar{
    width: .5rem;
}
body .controllmenu span.vbar{
    height: 8rem;
    width: 2.05rem;
    background-color: var(--thumbnail-color);
    transition: 1s;
}
body .controllmenu .tomainpage{
    width: 15.5rem;
}
body .controllmenu .tomainpage p{
    text-align: center;
    font-weight: bold;
    line-height: 2rem;
}
body .controllmenu .tomainpage p a.homepage{
    text-decoration: none;
    color: var(--inner-mp-color);
    background-color: var(--bg-mp-color);
    padding: .5rem 1.4rem;
    border-radius: 1.5rem;
    box-shadow: 0 0 1rem 0 gray;
    transition: .5s;
}
body .controllmenu .tomainpage p a.homepage:hover{
    color: var(--bg-mp-color);
    background-color: var(--inner-mp-color);
}