@import url(http://fonts.googleapis.com/css?family=roboto);

body {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
  line-height: 1;
}
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block }
ol, ul { list-style: none }
blockquote, q { quotes: none }
blockquote:before, blockquote:after, q:before, q:after {
  content: '';
  content: none
}
table {
  border-collapse: collapse;
  border-spacing: 0
}

/* core css */
.background {
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  overflow: hidden;
  will-change: transform;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  height: 130vh;
  position: fixed;
  width: 100%;
  -webkit-transform: translateY(20vh);
  -ms-transform: translateY(20vh);
  transform: translateY(20vh);
  -webkit-transition: all 1.4s cubic-bezier(0.22, 0.44, 0, 1);
  transition: all 1.4s cubic-bezier(0.22, 0.44, 0, 1);
}
.background:before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
.background:first-child {
  background-image: url('../img/section-1-bg.jpg');
  -webkit-transform: translateY(-10vh);
  -ms-transform: translateY(-10vh);
  transform: translateY(-10vh);
}
.background:first-child .content-wrapper {
  -webkit-transform: translateY(10vh);
  -ms-transform: translateY(10vh);
  transform: translateY(10vh);
}
.background:nth-child(2) { background-image: url(); }
.background:nth-child(3) { background-image: url(); }

/* Set stacking context of slides */
.background:nth-child(1) { z-index: 2; }
.background:nth-child(2) { z-index: 1; }