Is it possible to enlarge size of the open posts?

Please use following style with “Custom CSS” field

.item.large { width:636px; height:636px;}
.jp-progress { width: 485px; }
.large-info .contact-map,.contact-map iframe{ width:636px;}
.entry-video, .entry-video iframe { width:636px;}
.entry_touch { width: 606px; height: 257px;}
.entry-content {    width: 606px; height: 257px;}

And we need to set image cropping size on line 23-24 of “post-featuredimage.php” file.