javascript - Font-Size Change Problems -

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i have header changes size on scroll within website coding. need change font size of text within header. able go smaller following code. below have relvant css.

$(document).on('scroll', function(e) {      var value = $(this).scrolltop();      if ( value < 100 )          $("header").css("height", "100px");      else          $("header").css("height", "55px");          $('h1').css({'font-size' : '30px'});  });
makes go smaller until refresh

h1 {      font-size: 75px;      width: 100vw;      color: #212121;      padding-top: 2vh;      font-family: 'raleway', sans-serif;      padding-left: 1vw;      font-weight: 300;      z-index: 30;  }

though if try make resets it's original fontsize (code below) when scroll messes js , none of js on page works.

$(document).on('scroll', function(e) {      var value = $(this).scrolltop();      if ( value < 100 )          $("header").css("height", "100px");          $('h1').css({'font-size' : '75px'});      else          $("header").css("height", "55px");          $('h1').css({'font-size' : '30px'});  });

if use js , not coffeescript, need add quotes if { ... } else { ... }

running example https://jsfiddle.net/pmgy9ar2/


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