Dropdown menu overlay header navigation title

Site URL: https://smdvflip.com/

Hello there,

I have some problems with my drop-down menu. Here is the photos you can easily see that the drop-down menu overly the nav title "Shop1". How do I fix it? 

Another problem is I create 6 lines in drop-down menu but for some reason the line jump up and they only show 5 lines.

I take the "Shop1" down of my website. I don't want my customer confused.  

I really appreciate with all your helps.

I have fixed it with tuanphan help. Thank you.