body {
  background: radial-gradient(#a8e063, #56ab2f);
  display: block;
  width: 100%;
  height: 100%;
  min-height: 100vh;
  color: #fff;
  font-family: 'Verdana', sans-serif;
}
h1 {
  font-size: 46px;
  text-shadow: 0 4px 10px rgba(0, 0, 0, 0.7);
}
.mainContainer {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
}
.title {
  text-align: center;
}