6. Cascading styles

CSS stands for Cascading Style Sheet. This means that styles are inherited in a cascade from the sections above them to the elements within them.

For example, if there is a paragraph inside a list: <li> <p>Paragraph</p> </li> The paragraph will inherit the styles that have been applied to the list.

In this exercise we are going to insert a block inside another like a 'matryoshka' or Russian doll, so that the inner blocks will gradually inherit all the styles of the block where they are located.

Exercise

File css-cascading.html

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<!doctype html>
<html>
<head>
   <title> Estilos en cascada </title>

   <link rel="stylesheet" type="text/css"
         href="css-cascading.css" >

</head>

<body>

   <h1> Estilos en cascada </h1>

   <div class="estilo1">
      <p>Primer nivel (color azul)</p>
      <div class="estilo2">
          <p>Segundo nivel (letra grande)</p>
          <div class="estilo3">
              <p>Tercer nivel (fondo amarillo)</p>
          </div>
      </div>
   </div>

</body>
</html>

File css-cascading.css

Código del fichero css-cascading.css

Result

Resultado de visualizar los ficheros css-cascading.html y css-cascading.css en un navegador