just replace the leaderboard_box_content block

gistfile1.txt

    <div class="pngfix" id="leaderboard_box_content">
      
 
      <style>
      .leaderboard_matrix {
        width: 790px; margin: 0 auto; padding: 10px; background: rgba(0,0,0,0.2); border-radius: 15px}
        
      .leaderboard_matrix img {
        float: left;
        margin: 15px;
        }
      .leaderboard_matrix img:hover {
        -webkit-transition: all 0.1s ease-in-out;
        -moz-transition: all 0.1s ease-in-out;
        -o-transition: all 0.1s ease-in-out;
        -ms-transition: all 0.1s ease-in-out;
        -webkit-transform:scale(1.2);
        -moz-transform: scale(1.2);
        -o-transform: scale(1.2);
        -ms-transform: scale(1.2);
      }
      
      #lb_prev {position: absolute; left: 20px; top: 300px}
      #lb_next {position: absolute; right: 20px; top: 300px}
      </style>
      
      <a href="/en-us/race_leaderboards/local/sds_tracks?page=1"><div class="pngfix" style="" id="lb_prev"></div></a>
      <a href="/en-us/race_leaderboards/local/sds_tracks?page=1"><div class="pngfix" style="" id="lb_next"></div></a>
      
      <div class="leaderboard_matrix">
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/289/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/291/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/292/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/293/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/294/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/296/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/289/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/291/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/292/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/293/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/294/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/296/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/289/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/289/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/291/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/292/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/293/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/294/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/289/preview_image.png" alt="/"></a>
        <a href="xxxxxx"><img src="https://mnrvita-ote.s3.amazonaws.com/rom_creations/294/preview_image.png" alt="/"></a>
        <div style="clear: both"></div>
      </div>

      <div style="clear: both"></div>

      <script>
      $(".leaderboard_matrix img").hover 
      </script>

    </div>