h1{
    text-align: center;
    color: azure;
   }
   body {
       background: url(https://img00.deviantart.net/03dd/i/2014/204/5/6/storm_cloud_stock_background_by_amka_stock-d7rwo06.jpg);
       background-repeat: no-repeat;
       background-position: center;
       background-attachment: fixed;
       background-size: cover;
   
   }
   p {
       color: azure;
       border: dashed crimson;
       width: 20%;
       
   }
   a{
       color: crimson;
   }
   .selector-for-some-widget {
       box-sizing: content-box;
     }
     ul {
       list-style-type: none;
       margin: 0;
       padding: 0;
       overflow: hidden;
       background-color: #333;
       position: -webkit-sticky; /* Safari */
       position: sticky;
       top: 0;
   }
   
   li {
       float: left;
   }
   
   li a {
       display: block;
       color: white;
       text-align: center;
       padding: 14px 16px;
       text-decoration: none;
   }
   
   li a:hover {
       background-color: #111;
   }
   
   .active {
       background-color: crimson;
   }