Image border cutting off in gallery for desktop and mobile

I am using a gallery block - simple for two sections and all the images I uploaded have a 1px black border around them. 

The problem is, the gallery block seems to be cutting off the border randomly on the sides or the top or bottom of some images. 

How do I correct this? 

Can you share link to this page? We can check easier

@tuanphan YES! Thank you so much for getting back to me! I haven't been getting replies to any of my posts for the past 2 days. 

Here's the page on my site where this is happening.

https://www.melanieklein.tv/2ibm-support-search-for-watson

pass: obiwanux

Thank you again!!!

Try this CSS code

.gallery-strips-item-wrapper {
    overflow: visible !important;
}
.gallery-strips-item img {
    border: 1px solid black;
}

@tuanphan Hi thank you but that is not working. I also tried changing the "strips" to "simple" because that gallery section is using the simple gallery but it didn't fix the image border issue. 

Is there anything else I can do before I have to go back and remove the border from all my images? 

Thanks.

Try this CSS

.gallery-grid-item-wrapper {
    border: 1px solid black;
}