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static/main.css

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+/* Responsive Design */
+@media (max-width: 640px) {
+    .w-72 {
+      width: 95%;
+    }
+    .h-72 {
+      height: 350px;
+    }
+  }
+  /* Main Container */
+  body {
+    background: linear-gradient(135deg, #2c3e50, #1f2937);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    min-height: 100vh;
+    font-family: "Arial", sans-serif;
+    color: #fff;
+  }
+
+  /* Main Content Wrapper */
+  .main-content {
+    border: 5px solid rgba(255, 255, 255, 0.2);
+    padding: 2rem;
+    border-radius: 1rem;
+    width: 90%;
+    max-width: 500px;
+    background-color: rgba(0, 0, 0, 0.3);
+    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
+    text-align: center;
+  }
+
+  /* Title */
+  .main-title {
+    font-size: 2.5rem;
+    font-weight: bold;
+    margin-bottom: 1.5rem;
+    color: #fff;
+    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
+  }

static/menu.css

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+/* Hamburger Menu Styles */
+#menu {
+    position: absolute;
+    top: 0;
+    left: 0;
+    z-index: 10;
+    transform: translateX(-100%);
+    visibility: hidden;
+    opacity: 0;
+    background-color: rgb(31, 41, 55);
+    transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
+    backdrop-filter: blur(10px);
+    border-right: 1px solid rgba(255, 255, 255, 0.2);
+  }
+  
+  #menu.open {
+    transform: translateX(0);
+    visibility: visible;
+    opacity: 1;
+  }
+  
+  #menu button {
+    transition: background-color 0.2s ease;
+    background-color: rgba(0, 0, 0, 0.1);
+    margin: 2px;
+    border-radius: 8px; /* 少し角を丸める */
+    display: flex;
+    align-items: center;
+    justify-content: flex-start;
+    gap: 10px;
+    padding: 0.75rem 1rem;
+    width: 100%;
+    text-align: left;
+    border: none;
+    color: #fff;
+    font-size: 1rem;
+    cursor: pointer;
+  }
+  
+  #menu button:hover {
+    background-color: rgba(55, 65, 81, 0.7);
+  }
+  
+  /* Hamburger Menu Button */
+  #menuButton {
+    background-color: rgba(255, 255, 255, 0.1);
+    border: none;
+    border-radius: 50%;
+    padding: 0.75rem; /* サイズを少し大きく */
+    cursor: pointer;
+    transition: background-color 0.2s ease;
+  }
+  
+  #menuButton:hover {
+    background-color: rgba(255, 255, 255, 0.2);
+  }