Was geht denn hier ab?this.style.backgroundColor = "white" this.style.display = "block"; this.style.display = "flex"; this.style["align-items"] = "center"; // stretch|center|flex-start|flex-end|baseline|initial|inherit; this.style["justify-content"] = "center"; // flex-start|flex-end|center|space-between|space-around|initial|inherit