フォントサイズの関係　16px ＝ 1rem

11px = 0.6875rem
12px = 0.75rem
13px = 0.8125rem
14px = 0.875rem
15px = 0.9375rem
18px = 1.125rem
20px = 1.25rem
22px = 1.375rem
24px = 1.5rem
26px = 1.625rem
30px = 1.875rem

備忘録