* {
    margin: 0;
    font-size: 100%;
  }
  
ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #646464;
    font-family: Arial;
   }
    
li {
    float: left;
   }
    
.navi li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
   }
  
.navi li a:hover {
    background-color: #306998;
   }

.index a {
    background-color: lightblue;
    color: black;
    font-weight: bold;
}

h3 {
    font-size: 165%;
}
p {
    font-size: 165%;
}