Hi Sashikanta,
Please write to us with details when you found this Arrow Key Issue of the slider? What kind of customization did you before raised the issue?
It looks like you have customized the theme code or it’s conflicted with a 3rd party plugin. This is because the style also looks different on your website http://prntscr.com/k7blyu that doesn’t match our theme style.
Moreover, please learn more about our support policy (item support includes & not includes), here https://www.themelooks.com/support/support-policy/ before post a topic or ask a question.
Best Regards,
ThemeLooks Support Team