html {
 background-color: yellow;
 box-sizing: border box; 
 zoom: 50%;
 margin: 50px;
}

.kame {
	width: 1000px;
	height:  1000px;
	border: solid 3px  black;
}

.snake {
	width: 1000px;
	height:  1000px;
	border: solid 3px  black;
}

.kai {
	width: 1000px;
	height:  1000px;
	border: solid 3px  black;
}

.home {
	cursor: pointer;
    background-color: orange;
	color: white;
	padding: 24px 48px;
	font-size: 36px;
}

button:active {
  	transform: translateY(4px); 
}

button:hover {
	color: green;
}