a {
	size: 20px 10px;
}

b {
	size: calc(4 * 2px) 2px;
}

c {
	size: fit-content auto;
}

d {
	size: 32px;
}

e {
	size: 4in 4/3;
}

f {
	size: 4/3 3in;
}

g {
	size: 16/9 1080px;
}