Implement download integrations and patches and devices detection

src/app.postcss

@@ -2,32 +2,6 @@
 
 @tailwind base;
 
-:root {
-  font-family: Inter, Avenir, Helvetica, Arial, sans-serif;
-  font-size: 16px;
-  line-height: 24px;
-  font-weight: 400;
-
-  color-scheme: light dark;
-  color: rgba(255, 255, 255, 0.87);
-  background-color: #242424;
-
-  font-synthesis: none;
-  text-rendering: optimizeLegibility;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-  -webkit-text-size-adjust: 100%;
-}
-
-a {
-  font-weight: 500;
-  color: #646cff;
-  text-decoration: inherit;
-}
-a:hover {
-  color: #535bf2;
-}
-
 body {
   margin: 0;
   display: flex;
@@ -36,15 +10,6 @@ body {
   min-height: 100vh;
 }
 
-h1 {
-  font-size: 3.2em;
-  line-height: 1.1;
-}
-
-.card {
-  padding: 2em;
-}
-
 #app {
   max-width: 1280px;
   margin: 0 auto;
@@ -52,38 +17,17 @@ h1 {
   text-align: center;
 }
 
-button {
-  border-radius: 8px;
-  border: 1px solid transparent;
-  padding: 0.6em 1.2em;
-  font-size: 1em;
-  font-weight: 500;
-  font-family: inherit;
-  background-color: #1a1a1a;
-  cursor: pointer;
-  transition: border-color 0.25s;
-}
-button:hover {
-  border-color: #646cff;
-}
-button:focus,
-button:focus-visible {
-  outline: 4px auto -webkit-focus-ring-color;
-}
-
-@media (prefers-color-scheme: light) {
-  :root {
-    color: #213547;
-    background-color: #ffffff;
-  }
-  a:hover {
-    color: #747bff;
-  }
-  button {
-    background-color: #f9f9f9;
-  }
-}
-
 @tailwind components;
-
 @tailwind utilities;
+
+@layer components {
+  .btn {
+    @apply py-2.5 px-5 mr-2 mb-2 text-sm font-medium 
+    text-gray-900 focus:outline-none bg-white rounded-lg 
+    border border-gray-200 hover:bg-gray-100 
+    hover:text-blue-700 focus:z-10 focus:ring-4 
+    focus:ring-gray-200 dark:focus:ring-gray-700 
+    dark:bg-gray-800 dark:text-gray-400 
+    dark:border-gray-600 dark:hover:text-white dark:hover:bg-gray-700
+  }
+}