body {
    overflow-x: hidden;
}
button {
    z-index: 3;
    position: fixed;
    right: 1em;
    width: 2em;

}
nav {
    padding-right: 4em;
    background: black;
    color: whitesmoke;
    position: fixed;
    z-index: 2;
    inset:0px;
    padding: 2em;
    /*transform: translateX(-100vw);*/
    opacity: 0;
    
    pointer-events: none;
    transition: opacity 250ms;
    a { color: currentColor;}
}
nav.open {

    pointer-events: all;
    /*transform: translateX(0);*/
    opacity: 1;
}