style.css

body {
  background-image: url("img/Mysnake.jpg");
  
 }

.font {
  font-size: xx-large;
  font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
  padding: 125px;
}

.img {
  max-width: 100%;
  height: 80%;
}

.button {
    background-color: #1c87c9;
    -webkit-border-radius: 60px;
    border-radius: 60px;
    border: none;
    color: #eeeeee;
    cursor: pointer;
    display: inline-block;
    font-family: sans-serif;
    font-size: 20px;
    text-align: center;
    text-decoration: none;
    padding: 10px 10px;
  }
  @keyframes glowing {
    0% {
      background-color: #2ba805;
      box-shadow: 0 0 5px #2ba805;
    }
    50% {
      background-color: #49e819;
      box-shadow: 0 0 20px #49e819;
    }
    100% {
      background-color: #2ba805;
      box-shadow: 0 0 5px #2ba805;
    }
  }
  .button {
    animation: glowing 1300ms infinite;
  }