* {
    box-sizing: border-box ;
  }
  
  body{
    font-size : 110% ;
  }
  
  header {
    background-image: url('http://intro-webdesign.com/CSS/assignment-2/images/flywheel.jpg') ;
    background-size: 100%;
    background-repeat: no-repeat;
    position: relative;
  }
  
  nav {
    font-variant: small-caps;
    font-size: 150%;
    font-family: arial, Arial, Helvetica, sans-serif;
    position: relative;
   padding-bottom: 5%;
  }
  
  
  nav a {
    background-color: rgba(218,234,213,0.60);
    color: #000000; /* Black */
    display: inline-block;
    padding: 1%;
    margin-left: 7%;
    margin-right: 7%;
    margin-top: 2%;
    margin-bottom: 2%;
    text-decoration: none; 
    border-radius: 10%; 
  }
  
  
  .active {
    background: #FFFFFF; /* White */
  }
  
  
  h1{
    color : #ffffff;
    text-align : center;
    font-size : 250%;
    text-transform : uppercase;
  }
  
  
  main {
    font-size : 110% ;
  }
  
  img {
     width: 100%;
     border: black solid;
     margin: 0 auto;
  }
  .left {
     width: 20%;
     display: inline-block;
     padding : 2% ;
     background-color: #808000;
     height: 100vw;
  }
  aside a{
     float: left;
     margin: 0 auto;
     margin-bottom: 7%;
     margin-top: 7%;
  }
  
  
  .right {
     width :80%;
     float: right;
     padding: 2%;
     padding-top :0 ;
  }
  
  main h2 {
     text-transform : uppercase;
     color : #0000ff ;
     font-size : 170% ;
  }
  
  table {
     color: #ffffff;
     border-radius: 5%;
     margin: 0 auto;
     font-size: 1.2em;
  }
  
  tr>th {
    background-color: #808000;
     padding-top: 17px;
     padding-bottom: 17px;
     color: #ffffff;
     border-radius: 10px 10px 0 0;
     border-bottom: 5px solid greenyellow;
  }
  
  
  tr {
    background-color: #c8dead;
    color: #000000;
    opacity: 0.7;
  }
  
  tr:hover {
     opacity: 1;
  }
  
  
  
  tr>th:nth-child(1) {
    text-align: left;
    padding-right: 120px;
    padding-left: 10px;
  }
  
  tr>td:nth-child(1) {
    text-align: left;
    padding-right: 120px;
    padding-left: 10px;
    padding-top: 8px;
    padding-bottom: 8px;
  }
  
  tr>td:nth-child(2) {
     text-align: center;
     padding-left: 10px;
     padding-right: 10px;
     padding-top: 8px;
     padding-bottom: 8px;
  }
  
  tr>td:nth-child(3) {
    text-align: center;
    padding-left: 30px;
    padding-right: 30px;
    padding-top: 8px;
     padding-bottom: 8px;
  }