CSS Modules

README.md

Styled-components, CSS

&[data-primary] { 
  background: #f00; 
  color: #fff;
}
&:not([data-primary]) { 
  background: #000; 
  color: #000;
}

styled.Button`
  background: ${ifPrimary('#f00' : '#00f')};
  color: ${ifPrimary('#fff' : '#000')};
  padding: 0.5rem 1rem;
`;
// or
${ifProp('primary').then('#f00').else('#00f')}

Articles

Css-loader

CSS-MODULES: WHY THIS IS THE MOST SIGNIFICANT IMPROVEMENT TO CSS IN YEARS

The way orginize css