Hello,
It's an odd once since certain browsers can render 1px offsets slightly differently. You can maybe try adding a 1px padding value to the top here to see if that helps.
s5_info_slide.css - line 476
.s5_is_css_6 .s5_is_slide_css {
background-color: #000000;
color: #ffffff;
height: 100%;
left: 0;
margin-left: 0;
margin-top: 0;
opacity: 1;
position: absolute;
transform: translateY(-100%);
width: 100%;
padding-top: 1px;
}
Regards,