HTML / CSS - adjust font-size to fill parent height and width

Answer 1

HTML

 
    
Paragraph of text. Paragraph of text. Paragraph of text.
 
 

CSS

#change { 
    width: 80%; 
    height: 80%; 
    border: 1px solid black; 
    overflow: hidden; 
    font-size: 1em; 
} 

JAVASCRIPT

$(function() { 
    while( $('#change div').height() > $('#change').height() ) { 
        $('#change div').css('font-size', (parseInt($('#change div').css('font-size')) - 1) + "px" ); 
    } 
});