add left margin to image caption Carousel mobile view

How can I get the image Caption to have the same left alignment as the image Description on the mobile view?

For example, notice the Description text has a left margin on http://margaretsphotoplace.com/projects/paper/#jp-carousel-2129 in the mobile view.

I would like to add the same left margin for the Caption text for the mobile view to http://www.ginapiccalo.com/projects/the-atlanta-journal-constitution/#jp-carousel-864

I tried adding this, but it doesn’t work.

@media (max-width: 480px) {
	.wp-caption-text {
		padding-left: 5px;
		text-align: center;
	}
}

http://wordpress.org/extend/plugins/jetpack/