function divhider() {
   var x = document.getElementsByClassName("msginfo");
   x[0].style.visibility = "hidden";
}


function animation() {
   var x = document.getElementsByClassName("msginfo");
   x[0].style.animation = "disparition 0.2s 1";
}

window.setTimeout(divhider, 2200);
window.setTimeout(animation, 2000);