Support Forum

This should help for some of that:

.wpsp-card.wpsp-polaroid .wpsp-content-wrap {
    padding: 0;
}

.wpsp-row article:nth-child(even) .wp-show-posts-image {
    padding-left: 1.5em;
    box-sizing: border-box;
    padding-right: 0;
}

.wpsp-row article .wp-show-posts-image {
    padding-right: 1.5em;
    box-sizing: border-box;
}

The read more button is more difficult. Give this a shot: https://wpshowposts.com/support/topic/read-more-link-instead-of-button/