Hello
When we inspected your site URL, we found that you have made the custom changes in the existing theme file. Due to this reason, there are some CSS issues in your site.
However, to fix the issue, please add the below given CSS snippet by gooing to Admin Panel > Appearance > Customize > Additional CSS
#page #sidr-left-top-button {
top: 50px;
}
#page #sidr-right-top-button {
top: 50px;
}
Hope this helps
Feel free to reach us for any further query/confusion.
Regards!