*,*::after,*::before{
    box-sizing: border-box;
}

:root
{
    --hue:300;
    --saturation:50%;
    --foreground-color: hsl(var(--hue),var(--saturation),75%);
    --background-color: hsl(var(--hue),var(--saturation),20%);
}

body
{
    margin:0 ;
    background-color: var(--background-color);
    overflow:hidden;
}


.paddle
{
    --position: 50;

    position:absolute;
    background-color: var(--foreground-color);
    top: calc(var(--position) * 1vh);
    transform: translateY(-50%);
    width:1vh;
    height:10vh;
}

.paddle.left{
    left:1vw;
}

.paddle.right{
    right:1vw;
}

.ball{
    --x:50;
    --y:50;
    
    position: absolute;
    background-color: var(--foreground-color);
    left:calc(var(--x)*1vw);
    top: calc(var(--y)*1vh);
    border-radius:50%;
    transform: translate(-50%,-50%);
    width: 2.5vh;
    height: 2.5vh;
}

.score{
    display:flex;
    justify-content: center;
    font-weight: bold;
    font-size:7vh;
    color:var(--foreground-color);
}

.score> * {
    flex-grow: 1;
    flex-basis: 0;
    padding:0 2vh;
    margin:1vh 0;
    opacity: .5;
}

.score>:first-child{
    text-align:right;
    border-right:.5vh solid var(--foreground-color);
}