html {
    background-color:#39424E;
    font-family:"Kreon","sans serif";
    font-size:16px
  }

body {
  font-size:30px;
  font-family:"Kreon","sans serif";
  color:#fff;
  text-shadow:none;
  display:flex;
  justify-content:center;
  align-items:center;
  opacity:1;
  height: 100vh;
  margin: 0
  }
  
h1,h2,h3 {
  text-align:center;
  font-family:'Kreon', sans-serif;
  opacity:1
  }

button {
	border: none;
	background-color: inherit;
	font-family: 'Kreon', sans-serif;
	font-size: 2em;
	font-weight: bold;
	outline: none;
	transition: transform 150ms ease-in-out;
	}

button:hover {
	transform: scale(1.1);
	}