#code_block {
	width: 100%;
	margin: 0 auto;
	max-width: 600px;
	min-height: 350px;
	border: 10px solid #00BFFF;
	box-sizing: border-box;
	padding: 15px;
}
#field {
	padding: 20px;
	margin: 50px 0  0  0;
}
@media (max-width: 500px) {
	#code_block {
	border: 5px solid #00BFFF;
	box-sizing: border-box;
	padding: 5px;
}
}