Header animate

Anima el header

by Raúl Rojas

HTML

<div class="header">
  <h1>EL contenido del header</h1>
</div>
<div class="content">
</div>

CSS

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #cc5350;
  color: #fff;
  z-index: 1000;
  height: 200px;
  overflow: hidden;
  -webkit-transition: height 0.3s;
  -moz-transition: height 0.3s;
  transition: height 0.3s;
  text-align: center;
  line-height: 160px;
}

.header.shrink {
  height: 100px;
  line-height: 80px;
}

.header h1 {
  font-size: 30px;
  font-weight: normal;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
}

.header.shrink h1 {
  font-size: 24px;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
}

.content {
  height: 2000px;
  /*just to get the page to scroll*/
}

JavaScript

$(function () {
  var shrinkHeader = 300;
  $(window).scroll(function () {
    var scroll = getCurrentScroll();
    if (scroll >= shrinkHeader) {
      $('.header').addClass('shrink');
    } else {
      $('.header').removeClass('shrink');
    }
  });

  function getCurrentScroll() {
    return window.pageYOffset || document.documentElement.scrollTop;
  }
});