html - how to call browser based css?

Question

we can get the browser name from javascript but is there any way to change css accordingly.I mean some classes of css file because I dont want to link another css file , I want to write styles on
if chrome

 a img
{
margin:0;
}

//if mozila

a img
{
margin:5px;
}

Answer 1

Maybe something like

body.chrome a img
{
margin:0;
}

body.mozilla a img
{
margin:5px;
}

then use Javascript to set a class on the body as required.