When rendering the <html> element, the used values of CSS properties “writing-mode”, “direction”, and “text-orientation” on the <html> element are taken from the computed values of the <body> element, not from the <html> element’s own values. Consider setting these properties on the :root CSS pseudo-class. For more information see “The Principal Writing Mode” in https://www.w3.org/TR/css-writing-modes-3/#principal-flow
Ao representar o elemento <html>, os valores usados das propiedades CSS «writing-mode», «direction» e «text-orientation» no elemento <html> tómanse dos valores computados do elemento <body>, non a partir dos valores propios do elemento <html>. Considere establecer estas propiedades na pseudo-clase CSS raíz. Para máis información, consulte "O modo de escritura principal" en https://www.w3.org/TR/css-writing-modes-3/#principal-flow