.article-details {
  margin-bottom: 30px;
  padding: 20px;
  border: 1px solid #f5f5f5;
  border-radius: 3px;
}

div#mod-custom304.mod-custom.custom img {
    display: block;
    float: none;
    margin-left: auto;
    margin-right: auto;
    width: 99% !important;
}