Call-to Action-button is fixated on the header

The button on the photo on the start page cannot be moved. This means that I am very limited in my choice of image. As i am not able to use CSS, i don’t know, what to do. On TJ Custom CSS is one page. A code for the footer is on it. And i dont know where to insert the recommended

  .header-info {
      top: auto;
      bottom: 40px;
    }

Hi,

To help me getting the correct code to address your issue, I need direct inspection. Please share a link to your website here, so I can help you in a better way.

Regards,
Kharis
aThemes Support