#595 re-introduce auto-wrap behavior for various layout elements

nicegui/static/nicegui.css

@@ -6,6 +6,7 @@
 .nicegui-footer {
   display: flex;
   flex-direction: row;
+  flex-wrap: wrap;
   align-items: flex-start;
   gap: 1rem;
   padding: 16px;
@@ -16,6 +17,7 @@
 .nicegui-content {
   display: flex;
   flex-direction: column;
+  flex-wrap: wrap;
   align-items: flex-start;
   gap: 1rem;
   padding: 16px;
@@ -23,18 +25,21 @@
 .nicegui-row {
   display: flex;
   flex-direction: row;
+  flex-wrap: wrap;
   align-items: flex-start;
   gap: 1rem;
 }
 .nicegui-column {
   display: flex;
   flex-direction: column;
+  flex-wrap: wrap;
   align-items: flex-start;
   gap: 1rem;
 }
 .nicegui-card {
   display: flex;
   flex-direction: column;
+  flex-wrap: wrap;
   align-items: flex-start;
   gap: 1rem;
   padding: 16px;