Round corners on video and gallery block thumbnails - CSS

Hi there, 

I'm trying to round the corners on a gallery-block slideshow and thumbnails for individual video-blocks.

I'm using the following CSS but it hasn't applied to all of the video-block images and one of the gallery-block images is the wrong size...! See screenshots attached.

img { border-radius: 25px; }

iframe[src*="vimeo.com"] {
    border-radius: 25px;
}

Is it also possible to remove the overlay on the gallery-block slideshow so that you can't see the grey corners?

Site password is: softdeliciousbread

Any help anyone can provide much appreciated!

Hey there - I would love to help can you please send along the site url? 

Thanks! It's https://bluebird-tortoise-9xjd.squarespace.com/ 

softdeliciousbread

Password is incorrect

Hey @erinsydd we'd love to help but now the password is coming up as incorrect. 

Sorry @tuanphan @FluffCreativeStudio, my client changed it. The new password is: Bread

@erinsydd Looks like you already solved it 👏 ! Might be nice to post the solution so that others searching can find the answer 😊 

It looks like you solved with this CSS?

img {
    border-radius: 25px
}

iframe[src*="vimeo.com"] {
    border-radius: 25px
}