Recent updates have cause the spacing between posts in the blog module to decrease on mobile.

To fix this, find this section of CSS:

/*Style the blog image overlay icon*/

.ds-home-blog .et_overlay.et_pb_inline_icon:before {
    color: #fcf8ef !important;
}

@media only screen and (max-width: 980px) {
    .ds-home-blog.et_pb_blog_grid .et_pb_post {
        margin-bottom: 100px !important;
    }
}

@media only screen and (max-width: 767px) {
    .ds-home-blog.et_pb_blog_grid .column.size-1of1 .et_pb_post {
        margin-bottom: 100px !important;
    }
}

And replace it with this:

/*Style the blog image overlay icon*/

.ds-home-blog .et_overlay.et_pb_inline_icon:before {
    color: #fcf8ef !important;
}

@media only screen and (max-width: 980px) { /*Updated 20/02/18*/
    .ds-home-blog .et_pb_blog_grid .et_pb_post {
        margin-bottom: 100px !important;
    }
}

@media only screen and (max-width: 767px) { /*Updated 20/02/18*/
    .ds-home-blog .et_pb_blog_grid .column.size-1of1 .et_pb_post {
        margin-bottom: 100px !important;
    }
}