@media (max-width: 767px) {
    /* CSS rules for mobile devices */
  }
body{
    background:rgb(25, 143, 137);
    background-attachment: fixed;
    background-repeat: no-repeat;
 background-size: cover;
}
h1{
    color: aliceblue;
    text-align: center;
    font: 6em sans-serif;
}
li{
    word-spacing:10px ;
    font-size: 50px;
    margin:20px ;
    color:black;
    font-weight: lighter;
}