raizaduran on "[Theme: Hueman] remove the grey background of the image caption"

once added the caption in the image, there is a grey background coming around the image, I wanted to change the color of it to white.

I noticed, the css is coming from: /public_html/wp-content/themes/hueman/assets/front/css

Now, I'm not sure, if style.css change would affect it. Still I tried, this way:

/* caption text background color removed */
.entry .wp-caption-text { background-color: #ffffff
}
/* caption text background color removed */
.entry .wp-caption { background-color: #ffffff
}

But no luck, am I doing correct? or should be any other trick to achieve that?