Button issue on mobile device

Hi,

I have created a very simple 2 layout program.

Layout 1 displays some text, then a button below that (that takes user to layout 2 on being pressed), then a jpg graphic below that.

Layout 2 displays some text then 3 buttons below the text.

I have exported and Ftp'd across to my web hosting provider.

Testing through a desktop browser all looks fine.

Testing on my HTC phone running Android 4.4.2

Layout 1 just shows text and jpg image.

If I then select the browser page select (currently open pages) so that the layout reduces in size, the jpg disappears and the button appears.

If I then bring the page back to normal size I can click on the button, this takes me to layout 2.

Layout 2 then shows the text but no buttons, same action as above and buttons appear.

Any ideas?

Further investigation reveals that the buttons are there they are just not displaying. I.e. if I touch that area of screen I can see a blue rectangle appear briefly.