#button1 {
  color: grey;
  border: none;  
  background-color: white;
  cursor: pointer;
  width: 100%;
  font-size: 3vw;
    text-align: left;
}

#button1:hover {
	color: white;
    background-color: grey;
}
	.container {
	position: relative;
	}

	.center {
	position: absolute;
	top: 47%;
	left: 35%;
	transform: translate(-50%, -50%);
	font-size: 3vw;
	color: white;
	}