Swiper is a popular slider library that offers many effects and modes. When using one of these modes, fade mode, you may encounter a problem with overlapping slide images when the page loads.
This problem is caused by two slide images being displayed at the same time, before and after Swiper applies a transition effect. This can be especially noticeable when loading pages at high speeds or when images load slowly.
A simple solution to this problem is to set the background color of the .swiper-slide to white. This will make the overlapping of the slide images less noticeable to the user, as they will only see the white background.
Specifically, apply the following CSS
.swiper-slide { background-color: #fff; }Using this method allows for smooth use of Swiper’s fade mode.