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book.css

+/* Reset default styles */
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+    background: linear-gradient(135deg, #e0f7fa, #ffffff);
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    height: 100vh;
+    padding: 0;
+}
+
+.container {
+    background-color: white;
+    padding: 40px;
+    border-radius: 12px;
+    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
+    width: 100%;
+    max-width: 600px;
+    text-align: center;
+    box-sizing: border-box;
+}
+
+header {
+    margin-bottom: 30px;
+}
+
+h1 {
+    font-size: 32px;
+    color: #333;
+}
+
+p {
+    font-size: 18px;
+    color: #666;
+}
+
+.form-group {
+    margin-bottom: 20px;
+    text-align: left;
+}
+
+label {
+    font-size: 16px;
+    color: #555;
+    margin-bottom: 8px;
+    display: block;
+}
+
+input {
+    width: 100%;
+    padding: 14px;
+    font-size: 16px;
+    border: 1px solid #ddd;
+    border-radius: 8px;
+    background-color: #f9f9f9;
+    margin-top: 6px;
+    transition: border-color 0.3s ease;
+}
+
+input:focus {
+    border-color: #4CAF50;
+    outline: none;
+    background-color: #fff;
+}
+
+button {
+    width: 100%;
+    padding: 16px;
+    background-color: #4CAF50;
+    color: white;
+    font-size: 18px;
+    border: none;
+    border-radius: 8px;
+    cursor: pointer;
+    transition: background-color 0.3s ease;
+}
+
+button:hover {
+    background-color: #45a049;
+}
+
+button:active {
+    background-color: #3e8e41;
+}
+
+/* Responsive design */
+@media (max-width: 600px) {
+    .container {
+        padding: 20px;
+        width: 100%;
+    }
+
+    h1 {
+        font-size: 28px;
+    }
+
+    p {
+        font-size: 16px;
+    }
+
+    button {
+        font-size: 16px;
+        padding: 14px;
+    }
+}