Remove change to Mobile Menu – Tempera Cryout Creations

I would like to change the appearance of the mobile menu on the site im building – https://www.yourdivineappointment.com – I have the theme set to be responsive.
Is there a way to stop the menu from changing when it goes to a smartphone? I love the theme but the menu becomes a unappealing drop down when viewing on phones, it does not at all go along with the rest of the theme.
looks great on ipads just not iphones or android.

Also wondering why the logo disappears on phones as well – but thats another issue