A brand new welcome page (installer)

internal/handler/web/css/install.css

@@ -0,0 +1,63 @@
+.welcome {
+    width: 100%;
+    height: 100%;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    text-align: center;
+    flex-direction: column-reverse;
+}
+
+.welcome-button {
+    position: absolute;
+    bottom: 64px;
+    width: 150px;
+    backdrop-filter: blur(3px);
+    border: 0;
+    border-radius: 20px;
+    background-color: rgba(255, 255, 255, 0.2);
+    color: white;
+    padding: 8px;
+    font-size: 24px;
+    cursor: pointer;
+}
+
+.welcome h1 {
+    font-weight: bold;
+    font-size: 64px;
+    color: white;
+    font-family: 'Comic Sans MS', cursive, sans-serif;
+    margin: 0;
+    opacity: 0;
+}
+
+@keyframes fadeInOut {
+    0% {
+        opacity: 0;
+    }
+
+    20% {
+        opacity: 1;
+    }
+
+    80% {
+        opacity: 1;
+    }
+
+    100% {
+        opacity: 0;
+    }
+}
+
+.welcome-animation {
+    animation: fadeInOut 3s forwards;
+}
+
+.container {
+    width: 80%;
+    height: calc(100% - 100px);
+    border-radius: 20px;
+    backdrop-filter: blur(3px);
+    background-color: rgba(255, 255, 255, 0.2);
+    margin: 50px auto;
+}