body{
    background: url("https://i.blogs.es/bb26d5/temasone/450_1000.jpg");
    height: 400px;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
}

h1{
    font-style: italic;
    color:black;
    font-size: 25px;
     padding: 20px;
    border-radius: 25px;
}
a{
outline: none;
    text-decoration: none;
    display: inline-block;
    width: 19.5%;
    margin-right: 0.625%;
    text-align: center;
    line-height: 3;
    color: black;
}
li:last-child a{
  margin-right: 0;   
}
a:link, a:visited, a:focus{
background: yellow;  
   
    margin: 5px;
}
 a:hover{
  background: orange;   
}
 a: active{
  background:red;
     color: white;
}