Support Forum

Ah, try this instead:

@media (max-width: 767px) {
    #wpsp-8284 img {
        max-width: 150px;
    }

    #wpsp-8284 .wp-show-posts-image.wpsp-image-center {
        float: left;
        margin-right: 20px;
    }

    #wpsp-8284 .wp-show-posts-entry-title {
        font-size: 20px;
        padding: 20px;
    }

    #wpsp-8284 .wp-show-posts-entry-summary {
        display: none;
    }
}