* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  height: 100%;
  overflow-y: scroll;
  overflow-x: hidden;
}

body {
  height: 100%;
  color: #fff;
  background-color: #eee;
}

.header {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1;
  width: 100%;
  height: 128px;
  background-color: #E78260;
  overflow: hidden;
}

.header .circle {
  position: absolute;
  z-index: 100;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  background-color: #4d4cda;
  border-radius: 50%;
  margin: -10px 0 0 -10px;
  transform: scale(0);
  pointer-events:none;
}

.cards {
  padding: 128px 0 90px 0;
}

.cards .card {
  width: 90%;
  height: 260px;
  max-width: 600px;
  margin: 30px auto 0;
  background-color: #fff;
  opacity: 0;
  transform: translateY(50px);
  transition: all .5s ease;
  border-radius: 4px;
  box-shadow: 0 1px 20px rgba(0,0,0,.2);
}

.cards .card.is-active {
  opacity: 1;
  transform: translateY(0);
}