<!DOCTYPE html> <html lang="fr"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Tableau Sticky</title> <style> .table-wrapper { width: 100%; max-height: 400px; overflow: auto; border: 1px solid #ccc; } table { border-collapse: collapse; min-width: 2000px; /* ✅ Largeur augmentée pour forcer le scroll */ } th, td { padding: 10px; text-align: center; border: 1px solid #ccc; white-space: nowrap; position: relative; /* ✅ Permet d'ajouter les `::after` */ } /* Sticky Header */ th { background-color: #f2f2f2; position: sticky; top: 0; z-index: 1000; /* ✅ Z-index élevé pour ne jamais être recouvert */ } /* Sticky First Column */ th:first-child, td:first-child { position: sticky; left: 0; background-color: #fff; min-width: 120px; max-width: 120px; padding-right: 10px; z-index: 999; /* ✅ Garde la première colonne au-dessus */ } /* Bordure droite persistante */ th:first-child::after, td:first-child::after { content: ""; position: absolute; top: 0; right: 0; width: 2px; height: 100%; background-color: #ccc; /* ✅ Bordure droite visible */ } /* ✅ Correction : Bordure inférieure persistante pour la 1ère cellule */ th:first-child::before { content: ""; position: absolute; bottom: -1px; left: 0; width: 100%; height: 2px; background-color: #ccc; /* ✅ Bordure inférieure persistante */ } /* Alternance des couleurs */ tbody tr:nth-child(odd) { background-color: #f9f9f9; } </style> </head> <body> <div class="table-wrapper"> <table> <thead> <tr> <th></th> <?php for ($i = 1; $i <= 50; $i++): ?> <th>Col <?php echo $i; ?></th> <?php endfor; ?> </tr> </thead> <tbody> <?php for ($i = 1; $i <= 50; $i++): ?> <tr> <td>Row <?php echo $i; ?></td> <?php for ($j = 1; $j <= 50; $j++): ?> <td>Data <?php echo $i . "-" . $j; ?></td> <?php endfor; ?> </tr> <?php endfor; ?> </tbody> </table> </div> </body> </html>