Slider moved down from original position

Hi.I Installed Sydney for our website. http://khanimambatraining.co.za. initially the website responded well but it just suddenly moved the slider image downward, leaving disturbing white space above the image. can you please help me rectify this error. thanks

Hello there,

Actually that isn’t default behavior of the theme. To troubleshoot the issue, please try temporarily deactivate the all non-required plugins one by one and check whether the issue persists.

Regards,
Kharis

Hi.

i have tried deactivating the non required plugins on the site hhtp://khanimambatraining.co.za but the problem is still persist.
is there another solution i can try?