I created a new theme inheriting from Luma based on some totorias, the only change I made was to put it in _theme.less
// Widths
@layout__width: '';
@ layout__max-width: 100%;
@ layout-indent__width: 10px;
@ layout__width-xs-indent: 10px;
Actually the screen was 100%, but the header, menu and footer lost the original format and font of Luma. Shouldn't I inherit from the luma theme? Did I miss something?