delete sidebar-toggle

Hi, how are you?

i’m making a new website with your theme. But i can’t delete the button sidebar-toggle: i’ve delete the corresponding line in the Hexa theme, so when i’m logged in it’s OK, the menu is missing. when i log off, i’m returning on the whebsite, the button is here.
Same thing for the colour of the website title.

Can you help me?

thank in advance