body{
    margin: 0px;
    padding: 0px;
}

ball{
   display: block;
   width : 100px;
   height : 100px;
   background-color: aquamarine;
   z-index: 5;
}

paddle{
    display: block;
    width: 200px;
    height: 20px;
    background-color: black;
    position: absolute;
    z-index: 2;
}

score{
    display: flex;
    justify-content: space-between;
    padding: 30px;
    width: 200px;
    background-color: grey;
    margin: auto;
    z-index: 10;
    font-family: Arial, Helvetica, sans-serif;
    color: white;
    font-size: 40px;
    text-align: center;
}

prevScore{
    display: block;
    position: absolute;
    top: 40px;
    left: 20px;
    font-size: 20px;
    font-family: Arial, Helvetica, sans-serif
}

span{
    padding: 5px;
}

startgame{
    display: block;
    padding: 20px;
    width: 200px;
    background-color: aqua;
    margin: auto;
    text-align: center;
    font-family: Arial, Helvetica, sans-serif; 
}