*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

html,
body{
    width:100%;
    height:100%;
    overflow:hidden;
    background:#202124;
}

#toolbar{

    position:fixed;

    top:10px;
    left:10px;

    z-index:10;

    background:white;

    padding:10px;

    border-radius:8px;

    display:flex;
    gap:15px;

    align-items:center;

    font-family:sans-serif;

}

canvas{
    display:block;
    width:100vw;
    height:100vh;
    background:white;
    cursor:crosshair;
}