javascript - Keep navbar at top of page when scrolled to correct position -

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so website have header. @ top of header have logo , slogan, , beneath have nav bar. when user scrolls down want top part of header (logo , slogan) disappear whereas nav bar should stay fixed. know need position:fixed; added how activate when it's in right place. i've worked bit media queries before. there 1 y-scroll?

thanks

you'll need use javascript here in order subscribe window.onscroll event. 

window.onscroll = function(){     if(window.pageyoffset > 100/*px*/)         $('.nav').addclass('fixed_bar');     else         $('.nav').removeclass('fixed_bar'); }

and css .fixed_bar this:

.fixed_bar{     position:fixed;     top:0;     z-index:10000; } .fixed_bar .logo{     display:none; }

also, you'll have account space fixed nav free , add padding or margin beneath element;


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