CSS - salto de página antes

Descripción

La propiedad page-break-before indica si (y cuántos) saltos de página deben permitirse antes del cuadro de un elemento.

El valor de esta propiedad no es el único factor para determinar si un salto de página debe seguir al elemento. Esta decisión también se verá afectada por el valor de page-break-after para un elemento anterior y el valor de page-break-inside para cualquier elemento ancestro.

Valores posibles

auto - Los saltos de página no deben forzarse ni evitarse antes de la casilla del elemento.
always - Se debe forzar un salto de página antes del cuadro de este elemento.
avoid - No se debe colocar ningún salto de página antes del cuadro del elemento si es posible.
left - Forzar uno o dos saltos de página antes de la casilla del elemento, de modo que la página siguiente en la que se imprima un elemento será una página de la izquierda.
right - Forzar uno o dos saltos de página antes de la casilla del elemento, de modo que la página siguiente en la que se imprima un elemento será una página de la derecha.

Se aplica a

Todos los elementos a nivel de bloque.

Ejemplo

Aquí está el ejemplo:

<html>
   <head> 
   
      <style type = "text/css">
         p{page-break-before: always;}
      </style>
   </head>

   <body>
   
      <p>
         Android is an open source and Linux-based Operating System for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led by Google, and other companies.
         Android offers a unified approach to application development for mobile devices which means developers need only develop for Android, and their applications should be able to run on different devices powered by Android.
         The first beta version of the Android Software Development Kit (SDK) was released by Google in 2007 where as the first commercial version, Android 1.0, was released in September 2008.
         On June 27, 2012, at the Google I/O conference, Google announced the next Android version, 4.1 Jelly Bean. Jelly Bean is an incremental update, with the primary aim of improving the user interface, both in terms of functionality and performance.
         The source code for Android is available under free and open source software licenses. Google publishes most of the code under the Apache License version 2.0 and the rest, Linux kernel changes, under the GNU General Public License version 2
      </p>
      
      <p>
         Android applications are usually developed in the Java language using the Android Software Development Kit.
         Once developed, Android applications can be packaged easily and sold out either through a store such as Google Play or the Amazon Appstore.
         Android powers hundreds of millions of mobile devices in more than 190 countries around the world. It's the largest installed base of any mobile platform and growing fast. Every day more than 1 million new Android devices are activated worldwide.
         This tutorial has been written with an aim to teach you how to develop and package Android application. We will start from environment setup for Android application programming and then drill down to look into various aspects of Android applications
      </p>
      
      <button onclick = "myFunction()">Print this page</button>
      
      <script>
         function myFunction() {
            window.print();
         }
      </script>
      
   </body>
</html>

Producirá el siguiente resultado:

Para obtener más detalles, consulte CSS Paged Media .

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