body {
   font-family: 'Comfortaa', cursive;
       margin-left: 20%;
       margin-right: 20%;
       background-color: #00F7FF;
  
  }
div.a {
    color:rgb(54, 107, 74); 
    font-size:20px;
    text-align: center;
    font-weight: bold;
 
 }
 
 div.b{
    color: blue; 
    font-size:20px;
    text-align: center;
    font-weight: bold;
 
 }
 
 div.d{
   color: blue; 
   font-size:20px;
   margin-left: 35%;
   font-weight: bold;

}
.left {
   float: left;
   margin: 0 15px 15px 0;
}

.right {

   float: right;
   margin: 0 20px 20px 0;
}

 ul.c {
    margin-left: 35%;
    margin-right: 35;
 }

 p {
   font-size: 15px;

 }

 a {
   font-size:medium;
   color: black;
 }
 
 nav {
   font-weight: bold;
   text-align: center;

 }