I\'m developing a Web page that uses different sizes for its different paragraphs, h... and so on. I\'m using em sizes: font-size: 2em;, as an example. But when I
You can either use font sizes (em or pt) relative to the screen resolution as lanzz pointed out. Or, you can also use media queries in your css file as per "http://www.w3.org/TR/css3-mediaqueries/#width"
@media screen and (min-width: 400px) and (max-width: 700px) { … }
you can set any min and max width.