html {
 margin: 0;
  padding: 0;
   border-color: red;
    }
     body { 
      height: 95vh;
       box-sizing: border-box;
        background: black;
         color: red;
          border-color: red;
           margin: 0;
            padding: 15px;
             font-family: sans-serif;
              font-size: medium;
               color: red;
                }
                 a:link {
                  color: red;
                   }
                    a:visited {
                     color: red;
                      }
                       a:hover {
                        color: red;
                         }
                          a:active {
                           color: red;
                            }
                             div.gallery {
                              display: contents;
                               }
                                div.gallery img {
                                 border: 10px solid black;
                                  }
                                   div.gallery img:hover {
                                    border: 10px solid white;
                                     }
                                      body > a:first-of-type {
                                       grid-column: 1 / -1;
                                        display: flex;
                                         justify-content: center;
                                          padding: 20px;
                                           }
                                            body {
                                             display: grid;
                                              grid-template-columns: repeat(auto-fit, minmax(600px, 1fr));
                                               gap: 0;
                                                }