* {
       box-sizing: border-box;
   }

   html {
       background-image: url(/images/1975background.webp);
       background-color: rgba(0, 0, 0, 0.5);
       background-position: center;
       background-attachment: fixed;
       background-repeat: no-repeat;
       background-size: cover;
       background-blend-mode: darken;
   }

   body {
       margin: 0;
       font-family: Arial;
   }

   .header {
       padding: 32px;
       color: white;
   }

   header {
       display: flex;
       flex-direction: row;
       text-align: center;
       justify-content: center;
   }

   h2 {
       font-size: 200%;
       text-shadow: 3px 3px 8px grey;

   }

   header img {
       width: 150px;
   }

   .container {
       display: flex;
       flex-wrap: wrap;
       padding: 0 4px;
       align-items: center;
       justify-content: center;
   }

   /* Create four equal columns that sits next to each other */
   .column {
       flex: 25%;
       max-width: 25%;
       padding: 0 4px;
   }

   .column img {
       margin-top: 8px;
       vertical-align: middle;
   }

   footer {
       margin-top: 5em;
       padding: 2em;
       color: white;
       text-align: center;
       background-color: black;
   }

   #cornerBtn {
       display: none;
       position: fixed;
       bottom: 2em;
       right: 2em;
       z-index: 99;
       background-color: white;
       color: black;
       cursor: pointer;
       border: none;
       padding: 15px;
       border-radius: 10px;
       font-size: 14px;
   }

   #cornerBtn:hover {
       background-color: #555;
       /* Changes color when you hover */
   }

   /* Responsive layout - makes a two column-layout instead of four columns */
   @media screen and (max-width: 800px) {
       .column {
           flex: 50%;
           max-width: 50%;
       }
   }

   /* Responsive layout - makes the two columns stack on top of each other instead of next to each other */
   @media screen and (max-width: 600px) {
       .column {
           flex: 100%;
           max-width: 100%;
       }
   }