centralizar elementos

Signed-off-by: Rodrigo Bertoldo de Sousa Martins <rodrigo.sousa.577@gmail.com>

index.html

@@ -14,11 +14,14 @@
         body {
             font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
             min-height: 100vh;
+            height: 100vh;
             display: flex;
             justify-content: center;
             align-items: center;
             overflow-x: hidden;
+            overflow-y: auto;
             position: relative;
+            padding: 20px 0;
         }
 
         /* Background animado com gradiente */
@@ -48,6 +51,11 @@
             text-align: center;
             position: relative;
             z-index: 1;
+            margin: auto;
+            display: flex;
+            flex-direction: column;
+            align-items: center;
+            justify-content: center;
         }
 
         .logo {