styles.css

* {
	margin: 0;
	padding: 0;
}

#gameField {
	margin: 10px auto;
	border: 4px double black;
	width: 500px;
	display: flex;
	flex-flow: column nowrap;
	justify-content: center;
	align-items: center;
	border-radius: 5%;
	height: 700px;
}

#divCaption {
	width: 90%;
	height: 3%;
	display: flex;
	flex-flow: row nowrap;
	align-items: center;
	justify-content: space-between;
	padding: 10px 0;
}

#divSpeed {
	width: 90%;
	height: 3%;
	display: flex;
	flex-flow: row nowrap;
	align-items: center;
	justify-content: space-between;
	padding: 10px 0;
}

.buttonSpeed {
	width: 30%;
	height: 90%;
	border: 4px double orange;
	border-radius: 50%;
	text-align: center;
	line-height: 100%;
	color: orange;
	cursor: pointer;
}

.buttonSpeed.selected {
	border: 4px double red;
	color: red;
}

#buttonStart, #buttonStop {
	width: 30%;
	height: 100%;
	border-radius: 50%;
	text-align: center;
	line-height: 100%;
	cursor: pointer;	
}

#buttonStart {
	border: 4px double green;
	color: green;
}

#buttonStop {
	border: 4px double red;
	color: red;
}

#divResult {
	width: 30%;
	height: 90%;
	border: 1px solid blue;
	line-height: 100%;
	text-align: center;
	color: blue;
	border-radius: 50%;
}

#divField {
	width: 90%;
	height: 60%;
	border: 2px solid black;
	display: flex;
	flex-flow: row nowrap;
	justify-content: center;
	align-items: center;
}

#divField.crush {
	border: 2px solid red;
}

#fieldCells {
	outline: 1px solid black;
	width: 95%;
	height: 95%;
	display: flex;
	flex-flow: row wrap;
	justify-content: center;
	align-items: center;
}

.cell {
	width: 5%;
	height: 5%;
	outline: 1px solid lightgray;
	flex: 0 0 auto;
}

.cell.snake {
	background-color: yellow;
	outline: 1px solid yellow;
}

.crush .cell.snake {
	background-color: red;
	outline: 1px solid red;	
}

.crush #fieldcells {
	outline: 1px solid red;
}

.cell.food {
	background-color: lime;
	outline: 1px solid lime;
}

#keyboard {
	display: none;
}

@media (max-width: 1100px) {
	#gameField {
		width: 100vw;
		height: 100vh;
	}
	
	#keyboard {
		display: flex;
		width: 20vh;
		height: 20vh;
		margin: 2vh 0;
		padding: 2vh;
		border: 1px solid black;
		border-radius: 4vh;
		flex-flow: column nowrap;
		justify-content: center;
		align-items: center;
	}
	
	#LRButtons {
		width: 100%;
		display: flex;
		flex-flow: row nowrap;
		align-items: center;
		justify-content: space-between;
	}
	
	#divField {
		width: 60vh;
		height: 60vh;
	}
	
	#buttonStart, #buttonStop, .buttonSpeed, #divResult {
		height: 3vh;
		line-height: 3vh;
	}
	
	#divCaption, #divSpeed {
		width: 70vh;
		height: 5vh;
	}
	
	.buttonControl {
		width: 5vh;
		height: 5vh;
		line-height: 5vh;
		border: 4px double black;
		border-radius: 50%;
		text-align: center;
	}
}