var nav = document.getElementsByTagName("nav")[0];

function ToggleNav() {
    showNav = nav.style.display != "" && nav.style.display != "none";
    if (showNav) {
        nav.style.display = "none";
    } else {
        nav.style.display = "block";
    }
}

window.addEventListener("resize", function(){
    if (window.innerWidth > 885) {
        nav.style.display = "block";
    } else {
        nav.style.display = "none";
    }
});