Or, embed this snippet using GenerateWP WordPress Plugin.

Download

Clone

aaa

// Add Shortcode
function read_more( $atts , $content = null ) {

	// Code
	var $el, $ps, $up, totalHeight;
	
	$(".sidebar-box .button").click(function() {
	      
	  totalHeight = 0
	
	  $el = $(this);
	  $p  = $el.parent();
	  $up = $p.parent();
	  $ps = $up.find("p:not('.read-more')");
	  
	  // measure how tall inside should be by adding together heights of all inside paragraphs (except read-more paragraph)
	  $ps.each(function() {
	    totalHeight += $(this).outerHeight();
	  });
	        
	  $up
	    .css({
	      // Set height to prevent instant jumpdown when max height is removed
	      "height": $up.height(),
	      "max-height": 9999
	    })
	    .animate({
	      "height": totalHeight
	    });
	  
	  // fade out read-more
	  $p.fadeOut();
	  
	  // prevent jump-down
	  return false;
	    
	});
}
add_shortcode( 'continuar-ler', 'read_more' );