diff --git a/tampilan/halaman_utama.php b/tampilan/halaman_utama.php
index aa47622..335be08 100644
--- a/tampilan/halaman_utama.php
+++ b/tampilan/halaman_utama.php
@@ -9,84 +9,80 @@ include "../koneksi.php";
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Halaman Utama</title>
     <style>
+    .nav-menu,
+    .user-menu {
+        list-style: none;
+        display: flex
+    }
+
+    .nav-menu a,
+    .user-menu a {
+        text-decoration: none;
+        color: #fff;
+        transition: .3s
+    }
+
     * {
         margin: 0;
         padding: 0;
-        box-sizing: border-box;
+        box-sizing: border-box
     }
 
     body {
-        font-family: Arial, sans-serif;
+        font-family: Arial, sans-serif
     }
 
     .navbar {
         display: flex;
         justify-content: space-between;
         align-items: center;
-        background: #000000;
-        color: white;
+        background: #000;
+        color: #fff;
         padding: 15px 50px;
         position: sticky;
         top: 0;
         width: 100%;
-        z-index: 1000;
+        z-index: 1000
     }
 
     .navbar h2 {
         margin: 0;
-        font-size: 24px;
+        font-size: 24px
     }
 
     .nav-menu {
-        list-style: none;
-        display: flex;
-        gap: 20px;
+        gap: 20px
     }
 
-    .nav-menu li {
-        display: inline;
+    .nav-menu li,
+    .user-menu li {
+        display: inline
     }
 
     .nav-menu a {
-        text-decoration: none;
-        color: white;
         font-size: 18px;
         padding: 8px 12px;
-        transition: 0.3s;
-        border: 1px solid #ffffff;
+        border: 1px solid #fff
     }
 
-    .nav-menu a:hover {
+    .nav-menu a:hover,
+    .user-menu a:hover {
         background: #555;
-        border-radius: 5px;
+        border-radius: 5px
     }
 
     .user-menu {
-        list-style: none;
-        display: flex;
-        gap: 10px;
-    }
-
-    .user-menu li {
-        display: inline;
+        gap: 10px
     }
 
     .user-menu a {
-        text-decoration: none;
-        color: white;
         font-size: 16px;
         padding: 5px 10px;
-        transition: 0.3s;
-        border: 1px solid #ffffff;
-    }
-
-    .user-menu a:hover {
-        background: #555;
-        border-radius: 5px;
+        border: 1px solid #fff
     }
 
     .logout a {
-        color: red;
+        color: red
     }
     </style>
 </head>
@@ -104,6 +100,7 @@ include "../koneksi.php";
                 <li><a href="halaman_utama.php?page=siswa">Siswa</a></li>
                 <li><a href="halaman_utama.php?page=jurusan">Jurusan</a></li>
                 <li><a href="halaman_utama.php?page=kategori_kegiatan">Kategori</a></li>
+                <li><a href="halaman_utama.php?page=sertifikat">Sertifikat</a></li>
                 <?php
                 } elseif ($_COOKIE['level_user'] == 'siswa') {
                 ?>
diff --git a/tampilan/sertifikat.php b/tampilan/sertifikat.php
new file mode 100644
index 0000000..4836e05
--- /dev/null
+++ b/tampilan/sertifikat.php
@@ -0,0 +1,83 @@
+<?php
+// Fungsi untuk mendapatkan data sertifikat berdasarkan status dan kegiatan
+function getSertifikat($koneksi, $status = '', $kegiatan = '') {
+    $whereClause = "WHERE 1"; // Default kondisi WHERE
+    
+    if (!empty($status)) {
+        $whereClause .= " AND Status='" . mysqli_real_escape_string($koneksi, $status) . "'";
+    }
+    if (!empty($kegiatan)) {
+        $whereClause .= " AND Jenis_Kegiatan LIKE '%" . mysqli_real_escape_string($koneksi, $kegiatan) . "%'";
+    }
+
+    $query = "SELECT * FROM sertifikat 
+              INNER JOIN kegiatan USING(Id_Kegiatan) 
+              INNER JOIN kategori USING(Id_Kategori) 
+              INNER JOIN siswa USING(NIS) 
+              $whereClause ORDER BY Sub_Kategori, Tanggal_Upload ASC";
+
+    $result = mysqli_query($koneksi, $query);
+    
+    if (mysqli_num_rows($result) > 0) {
+        echo "<center><table border='1' cellpadding='5' cellspacing='0'>";
+        echo "<tr>
+                <th>Kategori</th>
+                <th>Sub Kategori</th>
+                <th>Jenis Kegiatan</th>
+                <th>Nama Siswa</th>
+                <th>Angkatan</th>
+                <th>Status</th>
+                <th>Lihat Sertifikat</th>
+              </tr>";
+        
+        while ($data = mysqli_fetch_assoc($result)) {
+            echo "<tr>
+                    <td>{$data['Kategori']}</td>
+                    <td>{$data['Sub_Kategori']}</td>
+                    <td>{$data['Jenis_Kegiatan']}</td>
+                    <td>{$data['Nama_Siswa']}</td>
+                    <td>{$data['Angkatan']}</td>
+                    <td>{$data['Status']}</td>
+                    <td><a href='../gambar/{$data['Sertifikat']}' target='_blank'>Lihat File</a></td>
+                  </tr>";
+        }
+        echo "</table></center>";
+    } else {
+        echo "<p>Tidak ada data</p>";
+    }
+}
+?>
+<center>
+    <form method="POST" action="">
+        <label for="status">Pilih Status:</label>
+        <select name="status">
+            <option value="">Semua</option>
+            <option value="Menunggu Validasi">Menunggu Validasi</option>
+            <option value="Tidak Valid">Tidak Valid</option>
+            <option value="Valid">Sudah Tervalidasi</option>
+        </select>
+
+        <label for="kegiatan">Pilih Kegiatan:</label>
+        <select name="kegiatan">
+            <option value="">Semua</option>
+            <?php
+        $list_kegiatan = mysqli_query($koneksi, "SELECT DISTINCT Jenis_Kegiatan FROM kegiatan");
+        while ($data_kegiatan = mysqli_fetch_assoc($list_kegiatan)) {
+            echo "<option value='{$data_kegiatan['Jenis_Kegiatan']}'>{$data_kegiatan['Jenis_Kegiatan']}</option>";
+        }
+        ?>
+        </select>
+
+        <input type="submit" value="Cari">
+    </form>
+</center>
+<br><br>
+
+<?php
+// Ambil nilai filter dari form
+$status = isset($_POST['status']) ? $_POST['status'] : '';
+$kegiatan = isset($_POST['kegiatan']) ? $_POST['kegiatan'] : '';
+
+// Tampilkan hasil pencarian
+getSertifikat($koneksi, $status, $kegiatan);
+?>
\ No newline at end of file
diff --git a/ubah/ubah_kategori_kegiatan.php b/ubah/ubah_kategori_kegiatan.php
index 42f9a78..b9da711 100644
--- a/ubah/ubah_kategori_kegiatan.php
+++ b/ubah/ubah_kategori_kegiatan.php
@@ -23,19 +23,31 @@ if(@$_GET['Id_Kegiatan']){
 
 
     <form action="" method="post">
-        <label>Kategori:</label>
-        <input type="text" name="kategori" readonly value="<?=$data_update['Kategori']?>" required><br>
-
-        <label>Sub Kategori:</label>
-        <input type="text" name="sub_kategori" readonly value="<?=$data_update['Sub_Kategori']?>" required><br>
-
-        <label>Nama Kegiatan:</label>
-        <input type="text" name="kegiatan" value="<?=$data_update['Jenis_Kegiatan']?>" autofocus required><br>
-
-        <label>Angka Kredit / Point:</label>
-        <input type="number" name="point" value="<?=$data_update['Angka_Kredit']?>" required><br>
-
-        <input type="submit" name="tombol_update" value="Update">
+        <table>
+            <tr>
+                <td><label>Kategori:</label></td>
+                <td><input type="text" name="kategori" readonly value="<?= $data_update['Kategori'] ?>" required></td>
+            </tr>
+            <tr>
+                <td><label>Sub Kategori:</label></td>
+                <td><input type="text" name="sub_kategori" readonly value="<?= $data_update['Sub_Kategori'] ?>"
+                        required></td>
+            </tr>
+            <tr>
+                <td><label>Nama Kegiatan:</label></td>
+                <td><input type="text" name="kegiatan" value="<?= $data_update['Jenis_Kegiatan'] ?>" autofocus required>
+                </td>
+            </tr>
+            <tr>
+                <td><label>Angka Kredit / Point:</label></td>
+                <td><input type="number" name="point" value="<?= $data_update['Angka_Kredit'] ?>" required></td>
+            </tr>
+            <tr>
+                <td colspan="2" align="right">
+                    <input type="submit" name="tombol_update" value="Update">
+                </td>
+            </tr>
+        </table>
     </form>
 
     <?php
@@ -57,13 +69,22 @@ if(@$_GET['Id_Kegiatan']){
 ?>
 
     <form action="" method="post">
-        <label>Kategori:</label>
-        <input type="text" name="kategori" readonly value="<?=$data_update['Kategori']?>" required><br>
-
-        <label>Sub Kategori:</label>
-        <input type="text" name="sub_kategori" autofocus value="<?=$data_update['Sub_Kategori']?>" required><br>
-
-        <input type="submit" name="tombol_update" value="Update">
+        <table>
+            <tr>
+                <td><label>Kategori:</label></td>
+                <td><input type="text" name="kategori" readonly value="<?= $data_update['Kategori'] ?>" required></td>
+            </tr>
+            <tr>
+                <td><label>Sub Kategori:</label></td>
+                <td><input type="text" name="sub_kategori" autofocus value="<?= $data_update['Sub_Kategori'] ?>"
+                        required></td>
+            </tr>
+            <tr>
+                <td colspan="2" align="center">
+                    <input type="submit" name="tombol_update" value="Update">
+                </td>
+            </tr>
+        </table>
     </form>
 
     <?php