I am trying to achieve something like this:

Althgouth, at the surface, seemed something very trivial to do. But in APEX I can't seem to find a proper way to implement it. There is no label item. If I for example try to add it myself like this (In the region text):
<br><center>You do not have an account:<button onclick="apex.submit({request:'SIGNUP',validate:true});" class="t-Button t-Button--hot lto3170571919161701_0" type="button" id="B3170571919161701"><span class="t-Button-label">Sign Up</span></button></center>
The button is not recognized, when I want to trigger process using this button (For the Process I want to trigger, under 'When button pressed', this button won't show in the list). So the process ends up triggerred on page submit instead.
I tried to add a normal button next to 'Display only' item. However, the value of 'Dispaly only' item occupies at least one column, which leaves a gap between the label and the button:

How can I have a normal button (APEX button), with text right in front of it?
(APEX 5.1, Universal Theme)