<style>
  body {
    		       background-color: black;
		       max-width: 600px;
  margin: 0 auto;
  img {
   border: 2px solid black;
          border-radius: 12px;
          padding: 15px
		     }
a:link, a:visited {
  background-color: #f44336;
  color: white;
  padding: 14px 25px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
}

a:hover, a:active {
  background-color: red;
}
</style>