ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

/* Change the link color to #111 (black) on hover */
li a:hover {
    background-color: orangered;
}

.active {
    background-color: #4CAF50;
}
h1{
 background-color: aquamarine
    
}
body{
    width:80%;
    margin: auto;
    background-image: url("001.jpg")  ;
    background-color: #cccccc;
}
header{
    background-color: white; 
}
section{
    float:left;
    background-color:#999999;
    padding: 10px;

}
aside{
   float:left;
    border: 5px;
    width:30%;
   background-color: #999999;
   padding:10px;
   height: 600px;
}
footer{
   clear: left;
    
}
h2{
    background-color: #999999;
}
audio{
    padding-left: 500px;
}