html, body{
  width: 100vw;
}

body{
  background-image: url("img/bg.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
  padding-bottom: 200px;
}

header{
  background: #FFFFFF;
  box-shadow: 0 2px 10px 0 rgba(0,0,0,0.11);
  height: 80px;
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  width: 100%;
}

header img{
    position: absolute;
    top: 50%;
    left: 0px;
    transform: translateY(-50%) scale(0.5);
}

#tabs{
  position: fixed;
  z-index: 10;
  bottom: 0px;
  left: 50%;
  transform: translateX(-50%) scale(0.5);
}

.content{
  margin: auto;
  margin-top: -100px;
}

.content img{
  display: block;
  width: 1020px;
  margin: auto;
}