Aligning position:fixed Elements with CSS calc | Brenna O'Brien
HTML Progressivo: As Propriedades width e height - Como Definir Altura e Largura (Tutorial de CSS)
GitHub - kristerkari/css-calc-transform: Tiny Javascript library to transform CSS properties with calc() function values to pixels based on window and element dimensions.
Everything You Need To Know About CSS Calc
html - Div width 100% minus fixed amount of pixels - Stack Overflow
Pixels to rem conversion in modern css
jquery - JavaScript: How to get the px value of a calc() css property? - Stack Overflow