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HTML

              
                <h1>Selector :is()</h1>
<article>
  <h2>Article 1</h2>
  <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec vestibulum convallis suscipit. Nam vel viverra mauris. Nunc venenatis sollicitudin imperdiet. Vivamus ut blandit sem. Pellentesque sodales efficitur enim in maximus. Donec ullamcorper nec sapien nec convallis. Suspendisse maximus fringilla nisl nec rhoncus.
  </p>
  <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec vestibulum convallis suscipit. Nam vel viverra mauris. Nunc venenatis sollicitudin imperdiet. Vivamus ut blandit sem. Pellentesque sodales efficitur enim in maximus. Donec ullamcorper nec sapien nec convallis. Suspendisse maximus fringilla nisl nec rhoncus.
  </p>
</article>
<article class="bg">
  <h2>Article 2</h2>
  <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec vestibulum convallis suscipit. Nam vel viverra mauris. Nunc venenatis sollicitudin imperdiet. Vivamus ut blandit sem. Pellentesque sodales efficitur enim in maximus. Donec ullamcorper nec sapien nec convallis. Suspendisse maximus fringilla nisl nec rhoncus.
  </p>
  <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec vestibulum convallis suscipit. Nam vel viverra mauris. Nunc venenatis sollicitudin imperdiet. Vivamus ut blandit sem. Pellentesque sodales efficitur enim in maximus. Donec ullamcorper nec sapien nec convallis. Suspendisse maximus fringilla nisl nec rhoncus.
  </p>
</article>

              
            
!

CSS

              
                body {
  margin: 0;
  font-family: 'Nunito',sans-serif;
}
h1 {
  text-align: center;
}
/* используем псевдокласс :is()  */
article:is(.bg) h2, article:is(.bg) p {
  color: #fff;
}
.bg {
  background: url(https://source.unsplash.com/x-XwnC7FgFM/1600x700) no-repeat center/cover gray;
  padding-top: 100px;
  padding-bottom: 100px;
}
/* без селектора :is() */
article {
  color: #666;
  padding: 20px 5%;
}

              
            
!

JS

              
                
              
            
!
999px

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