Search box in header of free catch-box theme

Hi, I am using Catch-box for my website. I have the search box showing in the header of my site. However, when I see what it looks like on mobile devices, the search box is smack in the middle of the header and covers my logo. I want the box to be above the logo instead. I know that this is possible because the website detech.com does it. My website is https://www.writersflowapp.com Thanks for your help, Amanda