Update style.css (#1)

Forgot an `;`.

Author: wluberti

app/static/css/style.css

@@ -5,7 +5,7 @@ table, th, td {
 .block {
     display: block;
     width: 100%;
-    border-radius: 8px
+    border-radius: 8px;
     background-color: #4CAF50;
     padding: 14px 28px;
     font-size: 16px;
@@ -71,4 +71,4 @@ textarea {
   color: #000;
   text-decoration: none;
   cursor: pointer;
-}
+}