.margin-top-common {
    margin-top: 20px;
}

.thumb_img {
  position: relative;
  width: 60px;
  height: 60px;
  background-position:center top;
  background-repeat:no-repeat;
  -moz-background-size:cover;
  background-size:cover;
  vertical-align:middle;
}

.topics-2column-list__image .thumb_img {
  width: 96px;
  height: 96px;
}

.summary-data-list__image .thumb_img {
  width: 50px;
  height: 50px;
}