# Source order and the Grid
We can put almost anything anywhere with grid, so source order becomes a very real discussion. we should always start with “mobile first”, but where we put stuff as the screen grows becomes way easier.
We can stack things in a simple way for mobile layouts:
+-------+
| |
| a |
| |
+-------+
| |
| b |
| |
+-------+
| |
| c |
| |
+-------+
And then move things around in unique ways as we gain more screen space:
+-----------+--------+
| | |
| a | b |
| | |
+-----------+ |
| | |
| c | |
| | |
+-----------+--------+