body {
  background-color: #f0f0f2;
  font-family: 'Roboto Slab', serif;
  }

#outer-box {
  display:flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

#inner-box {
  width: 100%;
  max-width: 500px;
  margin: 5% auto 0 auto;
  padding: 2%;
  background-color: #fff;
  border-radius: 5%;
  text-align: center;
  -webkit-box-shadow: -20px 20px 100px -30px rgba(0,0,0,0.75);
  -moz-box-shadow: -20px 20px 100px -30px rgba(0,0,0,0.75);
  box-shadow: -20px 20px 100px -30px rgba(0,0,0,0.75);
}