.wp-block-cnb-selectgames {
  display: flex;
  flex-wrap: wrap;
  margin-right: -20px;
  margin-bottom: 15px;
}
.wp-block-cnb-selectgames .wp-block-cnb-gameitem {
  width: calc(25% - 20px);
  margin-right: 20px;
  margin-bottom: 20px;
}
@media screen and (max-width: 500px) {
  .wp-block-cnb-selectgames .wp-block-cnb-gameitem {
    width: calc(50% - 20px);
  }
}