@import url(https://fonts.googleapis.com/css?family=Roboto:300);
*{
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
}
html, body{
  font-family: 'Roboto', sans-serif;
  font-size: 32px;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
body{
  background-color:#1BA39C;
}
div.button{
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  min-width: 50px;
  min-height: 50px;
  background: #fff;
  color: #005057;
  padding: 20px 30px;
  border-radius: 6px;
  box-shadow: 0 6px;
}