move copyright text to Welcome Page

src/assets/css/style.css

@@ -1248,6 +1248,18 @@ select {
   height: 80vh;
 }
 
+.h-screen {
+  height: 100vh;
+}
+
+.h-\[90vh\] {
+  height: 90vh;
+}
+
+.h-\[calc\(90vh-24px\)\] {
+  height: calc(90vh - 24px);
+}
+
 .max-h-0 {
   max-height: 0px;
 }