Increase padding on card image block caption - Fairfield Template

Site URL: https://www.valiantresidential.com/

I'm having trouble adjusting the padding between the caption and the edge of the block (using Card Image Layout). I feel like the text is running way too close to the edge of the box. I've adjusting the padding options for regular text boxes, but it doesn't seem to apply to the captions of image layouts. Any help is greatly appreciated! 

Template: Fairfield
Website: www.valiantresidential.com

: 

Add to Home > Design > Custom CSS

div#block-yui_3_17_2_1_1523955490189_14057 .image-card {
    padding-left: 10px;
    padding-right: 10px;
}

Thank you - this worked out great!