diff --git a/Zadania/Z77 - Od mniejszej do większej/index.php b/Zadania/Z77 - Od mniejszej do większej/index.php
index 2229331..2bc1fe4 100644
--- a/Zadania/Z77 - Od mniejszej do większej/index.php	
+++ b/Zadania/Z77 - Od mniejszej do większej/index.php	
@@ -18,30 +18,32 @@
 </div>
 <div class="box">
     <form action="index.php" method="post">
-        <label for="a">Wprowadź liczbę A:</label><br>
-        <input type="number" name="a" id="a"><br>
-        <label for="b">Wprowadź liczbę B:</label><br>
-        <input type="number" name="b" id="b"><br><br>
+        <fieldset>
+            <label for="a">Wprowadź liczbę A:</label>
+            <input type="number" name="a" id="a">
+            <label for="b">Wprowadź liczbę B:</label>
+            <input type="number" name="b" id="b">
+        </fieldset>
         <button type="submit">Wyślij</button>
     </form>
 </div>
-<div class="box">
-    <?php
-    if (isset($_POST['a']) && isset($_POST['b'])) {
-        $a = (int)htmlspecialchars($_POST['a']);
-        $b = (int)htmlspecialchars($_POST['b']);
-        if ($a < $b) {
-            for ($i = $a; $i <= $b; $i++) {
-                echo "$i ";
-            }
-        }
-        if ($b < $a) {
-            for ($i = $b; $i <= $a; $i++) {
-                echo "$i ";
-            }
+<?php
+if (isset($_POST['a']) && isset($_POST['b'])) {
+    echo '<div class="box">';
+    $a = (int)htmlspecialchars($_POST['a']);
+    $b = (int)htmlspecialchars($_POST['b']);
+    if ($a < $b) {
+        for ($i = $a; $i <= $b; $i++) {
+            echo "$i ";
         }
     }
-    ?>
-</div>
+    if ($b < $a) {
+        for ($i = $b; $i <= $a; $i++) {
+            echo "$i ";
+        }
+    }
+    echo '</div>';
+}
+?>
 </body>
 </html>
\ No newline at end of file
diff --git a/Zadania/Z77 - Od mniejszej do większej/style.css b/Zadania/Z77 - Od mniejszej do większej/style.css
index e2be01e..c4fb78e 100644
--- a/Zadania/Z77 - Od mniejszej do większej/style.css	
+++ b/Zadania/Z77 - Od mniejszej do większej/style.css	
@@ -1,50 +1,291 @@
+/* === UNIVERSAL SCHOOL TEMPLATE CSS (BLACK & WHITE EDITION) === */
+/* clean, modern, and copy-paste friendly for all projects */
+
+/* === RESET === */
 * {
     box-sizing: border-box;
+    margin: 0;
+    padding: 0;
 }
-body {
-    font-family: Verdana, serif;
-    background: #ffffff;
-    margin: 30px;
-}
-header {
-    border: 2px solid black;
-    border-radius: 1em;
-    padding: 20px;
-    box-shadow: rgba(0, 0, 0, 0.2) 3px 3px 5px;
-    background: #f0f0f0;
-}
-div {
 
+/* === VARIABLES === */
+:root {
+    --accent: #000;
+    --border: #000;
+    --bg: #fff;
+    --bg-alt: #f7f7f7;
+    --text: #111;
+    --shadow: rgba(0, 0, 0, 0.15) 3px 3px 6px;
+    --radius: 1em;
+    --max-width: 1300px;
 }
-input {
-    margin-top: 10px;
-    width: 30%;
-    border: black 2px solid;
+
+/* === PAGE === */
+body {
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Verdana, sans-serif;
+    background: linear-gradient(180deg, #ffffff 0%, #f5f5f5 100%);
+    color: var(--text);
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    min-height: 100vh;
+    line-height: 1.6;
+}
+
+/* === HEADER === */
+header {
+    border: 2px solid var(--border);
+    border-radius: var(--radius);
+    padding: 20px 30px;
+    box-shadow: var(--shadow);
+    background: var(--bg);
+    width: 95%;
+    max-width: var(--max-width);
+    text-align: center;
+    margin-top: 25px;
+    transition: box-shadow 0.3s ease, transform 0.2s ease;
+}
+
+header:hover {
+    box-shadow: rgba(0, 0, 0, 0.25) 4px 4px 10px;
+    transform: translateY(-2px);
+}
+
+header h1 {
+    font-size: 2.2rem;
+}
+
+header h2 {
+    margin-top: 0.5rem;
+    font-weight: 400;
+    font-size: 1.1rem;
+    color: #444;
+}
+
+/* === BOX === */
+.box {
+    border: 2px solid var(--border);
+    border-radius: var(--radius);
+    padding: 25px 35px;
+    margin-top: 25px;
+    background: var(--bg);
+    box-shadow: var(--shadow);
+    width: 95%;
+    max-width: var(--max-width);
+    transition: transform 0.2s ease, box-shadow 0.2s ease;
+}
+
+.box:hover {
+    transform: translateY(-2px);
+    box-shadow: rgba(0, 0, 0, 0.25) 4px 4px 10px;
+}
+
+/* === TEXT ELEMENTS === */
+p {
+    margin-bottom: 1rem;
+}
+
+h1, h2, h3, h4 {
+    margin-bottom: 0.5rem;
+    font-weight: 600;
+}
+
+a {
+    color: #000;
+    text-decoration: underline;
+    font-weight: 500;
+}
+
+a:hover {
+    opacity: 0.7;
+}
+
+/* === LISTS === */
+ul, ol {
+    margin: 1rem 0 1rem 1.5rem;
+}
+
+li {
+    margin-bottom: 0.4rem;
+}
+
+/* === TABLES === */
+table {
+    width: 100%;
+    border-collapse: collapse;
+    margin: 1rem 0;
+    background: var(--bg);
+    border: 2px solid var(--border);
+    border-radius: 0.6em;
+    overflow: hidden;
+    box-shadow: var(--shadow);
+}
+
+th, td {
+    padding: 10px 12px;
+    border-bottom: 1px solid #ccc;
+}
+
+th {
+    background: var(--bg-alt);
+    font-weight: bold;
+    text-align: left;
+}
+
+tr:hover {
+    background: #f2f2f2;
+}
+
+/* === FORMS === */
+form {
+    display: flex;
+    flex-direction: column;
+    gap: 1rem;
+    margin-top: 1rem;
+}
+
+fieldset {
+    border: 2px solid var(--border);
+    border-radius: 0.8em;
+    padding: 1.2rem 1.5rem;
+    background: var(--bg-alt);
+}
+
+legend {
+    font-weight: bold;
+    color: #000;
+    padding: 0 0.4rem;
+    font-size: 1.05rem;
+}
+
+label {
+    font-weight: 500;
+}
+
+input[type="text"],
+input[type="email"],
+input[type="password"],
+input[type="number"],
+input[type="tel"],
+textarea,
+select {
+    width: 100%;
+    font-size: 1rem;
+    margin-top: 6px;
+    margin-bottom: 8px;
+    border: 2px solid var(--border);
     border-radius: 0.5em;
-    height: 2em;
+    padding: 0.4rem 0.5rem;
+    transition: all 0.2s ease;
+    background: var(--bg);
+}
+
+textarea {
+    resize: vertical;
+    min-height: 100px;
+}
+
+input:focus,
+textarea:focus,
+select:focus {
+    outline: none;
+    border-color: #000;
+    box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
+    background: #f9f9f9;
+}
+
+input[type="radio"],
+input[type="checkbox"] {
+    accent-color: #000;
+    transform: scale(1.2);
+    margin-right: 0.3rem;
+}
+
+/* === BUTTONS === */
+button,
+input[type="submit"],
+input[type="button"],
+input[type="reset"] {
+    padding: 10px 20px;
+    border: 2px solid var(--border);
+    border-radius: 0.5em;
+    font-weight: bold;
+    font-size: 1rem;
+    background: linear-gradient(180deg, #fff 0%, #f2f2f2 100%);
+    cursor: pointer;
+    transition: all 0.2s ease;
+    align-self: flex-start;
 }
 
 button {
-    padding: 5px;
-    width: 30%;
-    border: black 2px solid;
+    width: 100%;
+}
+
+button:hover,
+input[type="submit"]:hover,
+input[type="button"]:hover,
+input[type="reset"]:hover {
+    background: #eaeaea;
+    box-shadow: rgba(0, 0, 0, 0.25) 3px 3px 6px;
+    transform: translateY(-2px);
+}
+
+button:active,
+input[type="submit"]:active,
+input[type="button"]:active,
+input[type="reset"]:active {
+    transform: translateY(0);
+    box-shadow: rgba(0, 0, 0, 0.15) 1px 1px 3px;
+    background: #f7f7f7;
+}
+
+/* === HR, CODE, ETC. === */
+hr {
+    border: 0;
+    border-top: 2px solid var(--border);
+    margin: 1.5rem 0;
+}
+
+img {
+    max-width: 100%;
     border-radius: 0.5em;
-    font-weight: bold;
 }
+
+code, pre {
+    background: #f4f4f4;
+    border: 1px solid #ccc;
+    border-radius: 0.4em;
+    padding: 0.3em 0.5em;
+    font-family: "Courier New", monospace;
+}
+
 pre {
-    font-family: Verdana, serif;
+    padding: 1em;
+    overflow-x: auto;
 }
 
-.box {
-    border: 2px solid black;
-    padding: 20px;
-    border-radius: 1em;
-    margin: 10px 0 10px 0;
-    box-shadow: rgba(0, 0, 0, 0.2) 3px 3px 5px;
+/* === RESPONSIVE === */
+@media (max-width: 900px) {
+    header, .box {
+        width: 95%;
+        padding: 20px;
+    }
+
+    button {
+        width: 100%;
+    }
+
+    textarea {
+        width: 100%;
+    }
 }
 
-.box h3 {
-    cursor: pointer;
+@media (max-width: 600px) {
+    header h1 {
+        font-size: 1.7rem;
+    }
+
+    header h2 {
+        font-size: 0.95rem;
+    }
 }
-
-
diff --git a/Zadania/Z78 - litery/index.php b/Zadania/Z78 - litery/index.php
new file mode 100644
index 0000000..930a708
--- /dev/null
+++ b/Zadania/Z78 - litery/index.php	
@@ -0,0 +1,54 @@
+<?php
+?>
+<!doctype html>
+<html lang="pl">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport"
+          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>Z78 - Litery</title>
+    <link rel="stylesheet" href="style.css">
+</head>
+<body>
+<header>
+    <h1>Zadanie Z78</h1>
+    <h2>Autor: Jakub Grzegorczyk</h2>
+</header>
+<div class="box">
+    <p>Napisz program, który odczytuje dwie wartości będące dużymi literami alfabetu angielskiego i wypisuje litery od pierwszej do drugiej.</p>
+</div>
+<div class="box">
+    <form action="index.php" method="post">
+        <fieldset>
+            <label for="a">Podaj pierwszy znak (A-Z):</label>
+            <input type="text" name="a" id="a" required>
+            <label for="b">Podaj drugi znak (A-Z):</label>
+            <input type="text" name="b" id="b" required>
+        </fieldset>
+        <button type="submit">Wyślij</button>
+    </form>
+</div>
+<?php
+if ($_SERVER['REQUEST_METHOD'] == 'POST') {
+    $a = htmlspecialchars($_POST['a']);
+    $b = htmlspecialchars($_POST['b']);
+
+    echo '<div class="box">';
+
+    if (ctype_upper($a) && ctype_upper($b) && strlen($a) == 1 && strlen($b) == 1) {
+        $alphabet = range('A', 'Z');
+        $a1 = array_search($a, $alphabet);
+        $b1 = array_search($b, $alphabet);
+        echo "Pierwszy znak: $a <br> Drugi znak: $b <br> Litery: ";
+        for ($i = $a1; $i <= $b1; $i++) {
+            echo $alphabet[$i] . ', ';
+        }
+    } else {
+        echo 'Litery nie są duże lub jest ich więcej niż jeden znak.';
+    }
+    echo '</div>';
+}
+?>
+</body>
+</html>
diff --git a/Zadania/Z78 - litery/style.css b/Zadania/Z78 - litery/style.css
new file mode 100644
index 0000000..c4fb78e
--- /dev/null
+++ b/Zadania/Z78 - litery/style.css	
@@ -0,0 +1,291 @@
+/* === UNIVERSAL SCHOOL TEMPLATE CSS (BLACK & WHITE EDITION) === */
+/* clean, modern, and copy-paste friendly for all projects */
+
+/* === RESET === */
+* {
+    box-sizing: border-box;
+    margin: 0;
+    padding: 0;
+}
+
+/* === VARIABLES === */
+:root {
+    --accent: #000;
+    --border: #000;
+    --bg: #fff;
+    --bg-alt: #f7f7f7;
+    --text: #111;
+    --shadow: rgba(0, 0, 0, 0.15) 3px 3px 6px;
+    --radius: 1em;
+    --max-width: 1300px;
+}
+
+/* === PAGE === */
+body {
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Verdana, sans-serif;
+    background: linear-gradient(180deg, #ffffff 0%, #f5f5f5 100%);
+    color: var(--text);
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    min-height: 100vh;
+    line-height: 1.6;
+}
+
+/* === HEADER === */
+header {
+    border: 2px solid var(--border);
+    border-radius: var(--radius);
+    padding: 20px 30px;
+    box-shadow: var(--shadow);
+    background: var(--bg);
+    width: 95%;
+    max-width: var(--max-width);
+    text-align: center;
+    margin-top: 25px;
+    transition: box-shadow 0.3s ease, transform 0.2s ease;
+}
+
+header:hover {
+    box-shadow: rgba(0, 0, 0, 0.25) 4px 4px 10px;
+    transform: translateY(-2px);
+}
+
+header h1 {
+    font-size: 2.2rem;
+}
+
+header h2 {
+    margin-top: 0.5rem;
+    font-weight: 400;
+    font-size: 1.1rem;
+    color: #444;
+}
+
+/* === BOX === */
+.box {
+    border: 2px solid var(--border);
+    border-radius: var(--radius);
+    padding: 25px 35px;
+    margin-top: 25px;
+    background: var(--bg);
+    box-shadow: var(--shadow);
+    width: 95%;
+    max-width: var(--max-width);
+    transition: transform 0.2s ease, box-shadow 0.2s ease;
+}
+
+.box:hover {
+    transform: translateY(-2px);
+    box-shadow: rgba(0, 0, 0, 0.25) 4px 4px 10px;
+}
+
+/* === TEXT ELEMENTS === */
+p {
+    margin-bottom: 1rem;
+}
+
+h1, h2, h3, h4 {
+    margin-bottom: 0.5rem;
+    font-weight: 600;
+}
+
+a {
+    color: #000;
+    text-decoration: underline;
+    font-weight: 500;
+}
+
+a:hover {
+    opacity: 0.7;
+}
+
+/* === LISTS === */
+ul, ol {
+    margin: 1rem 0 1rem 1.5rem;
+}
+
+li {
+    margin-bottom: 0.4rem;
+}
+
+/* === TABLES === */
+table {
+    width: 100%;
+    border-collapse: collapse;
+    margin: 1rem 0;
+    background: var(--bg);
+    border: 2px solid var(--border);
+    border-radius: 0.6em;
+    overflow: hidden;
+    box-shadow: var(--shadow);
+}
+
+th, td {
+    padding: 10px 12px;
+    border-bottom: 1px solid #ccc;
+}
+
+th {
+    background: var(--bg-alt);
+    font-weight: bold;
+    text-align: left;
+}
+
+tr:hover {
+    background: #f2f2f2;
+}
+
+/* === FORMS === */
+form {
+    display: flex;
+    flex-direction: column;
+    gap: 1rem;
+    margin-top: 1rem;
+}
+
+fieldset {
+    border: 2px solid var(--border);
+    border-radius: 0.8em;
+    padding: 1.2rem 1.5rem;
+    background: var(--bg-alt);
+}
+
+legend {
+    font-weight: bold;
+    color: #000;
+    padding: 0 0.4rem;
+    font-size: 1.05rem;
+}
+
+label {
+    font-weight: 500;
+}
+
+input[type="text"],
+input[type="email"],
+input[type="password"],
+input[type="number"],
+input[type="tel"],
+textarea,
+select {
+    width: 100%;
+    font-size: 1rem;
+    margin-top: 6px;
+    margin-bottom: 8px;
+    border: 2px solid var(--border);
+    border-radius: 0.5em;
+    padding: 0.4rem 0.5rem;
+    transition: all 0.2s ease;
+    background: var(--bg);
+}
+
+textarea {
+    resize: vertical;
+    min-height: 100px;
+}
+
+input:focus,
+textarea:focus,
+select:focus {
+    outline: none;
+    border-color: #000;
+    box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
+    background: #f9f9f9;
+}
+
+input[type="radio"],
+input[type="checkbox"] {
+    accent-color: #000;
+    transform: scale(1.2);
+    margin-right: 0.3rem;
+}
+
+/* === BUTTONS === */
+button,
+input[type="submit"],
+input[type="button"],
+input[type="reset"] {
+    padding: 10px 20px;
+    border: 2px solid var(--border);
+    border-radius: 0.5em;
+    font-weight: bold;
+    font-size: 1rem;
+    background: linear-gradient(180deg, #fff 0%, #f2f2f2 100%);
+    cursor: pointer;
+    transition: all 0.2s ease;
+    align-self: flex-start;
+}
+
+button {
+    width: 100%;
+}
+
+button:hover,
+input[type="submit"]:hover,
+input[type="button"]:hover,
+input[type="reset"]:hover {
+    background: #eaeaea;
+    box-shadow: rgba(0, 0, 0, 0.25) 3px 3px 6px;
+    transform: translateY(-2px);
+}
+
+button:active,
+input[type="submit"]:active,
+input[type="button"]:active,
+input[type="reset"]:active {
+    transform: translateY(0);
+    box-shadow: rgba(0, 0, 0, 0.15) 1px 1px 3px;
+    background: #f7f7f7;
+}
+
+/* === HR, CODE, ETC. === */
+hr {
+    border: 0;
+    border-top: 2px solid var(--border);
+    margin: 1.5rem 0;
+}
+
+img {
+    max-width: 100%;
+    border-radius: 0.5em;
+}
+
+code, pre {
+    background: #f4f4f4;
+    border: 1px solid #ccc;
+    border-radius: 0.4em;
+    padding: 0.3em 0.5em;
+    font-family: "Courier New", monospace;
+}
+
+pre {
+    padding: 1em;
+    overflow-x: auto;
+}
+
+/* === RESPONSIVE === */
+@media (max-width: 900px) {
+    header, .box {
+        width: 95%;
+        padding: 20px;
+    }
+
+    button {
+        width: 100%;
+    }
+
+    textarea {
+        width: 100%;
+    }
+}
+
+@media (max-width: 600px) {
+    header h1 {
+        font-size: 1.7rem;
+    }
+
+    header h2 {
+        font-size: 0.95rem;
+    }
+}