Code to add image border not working correctly

Hey there! 

I'm trying to add image borders to some images (with the link #border) and using this code 

.sqs-block-image-link[href*="border"] {

  img {

    border:2px solid black !important;

  }

}

But it's only showing a border on the top and left side of the image, not all the way around. 

Here's the link to the website...

thunderboltayurveda.squarespace.com
password: ayurveda

Thanks for the help! 

I see you figured it out with this code?

#block-b505f0aea3d65897d02a {
    border: 2px solid #000;
}

Thanks for your reply!

=I did use that code to make it work but I was hoping I could use the CSS that targeted any image with  "#border" as the link. Used the block ID method as a workaround.

You can try replace it with

div.image-block {
    border: 2px solid #000;
}