*{
    margin: 0px;
    padding: 0px;
}    
html{
    min-height: 100vh;
    background: linear-gradient(rgb(47,150,163),rgb(48,62,143));
}
    
body {
   
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
    padding: 20px
}

#slider{
    margin:auto;
    flex-direction: column;
}

canvas{
    margin:auto;
    padding: 0px
    flex-direction: column;
}