Apex 18.2.
Hi,
I want to build a numeric keypad like this,

I created some buttons in a static region but it displays them on one line.
https://apex.oracle.com/pls/apex/f?p=4550:1:107097546345893:::::
Workspace= MY_WS
user= forhelp
password= forhelppwd
app= POS
page= 8