Re: determining screen resolution over the web

Knute Johnson <>
Thu, 31 Jul 2014 16:40:35 -0700
On 7/31/2014 16:15, Roedy Green wrote:

On Thu, 31 Jul 2014 16:02:24 -0700, Knute Johnson
<> wrote, quoted or indirectly quoted someone
who said :

Do all your CSS in percentages rather than pixels or ems.

Still to do it properly you have to send different content, not just
format it differently.

You need smaller chunks with more requests for more.

I am writing an essay on the problem at

I thought you were asking how to size things for a device that could
have significantly different screen resolutions. If you want to
determine the browser you can use the HTTP_USER_AGENT environment
variable and select your response accordingly. Or as you showed above
you can let the browser decide which type of device and restrict the
HTML that is sent back that way.


@media print {
     .noprint {
         display: none;

and then set the stuff you don't want printed with the class "noprint".


Knute Johnson

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