Index: wp-admin/includes/class-wp-theme-install-list-table.php
===================================================================
--- wp-admin/includes/class-wp-theme-install-list-table.php	(revision 20762)
+++ wp-admin/includes/class-wp-theme-install-list-table.php	(working copy)
@@ -348,6 +348,7 @@
 				<div class="theme-description">
 					<?php echo wp_kses( $theme->description, $themes_allowedtags ); ?>
 				</div>
+				<br class="clear" />
 			</div>
 			<input class="theme-preview-url" type="hidden" value="<?php echo esc_url( $theme->preview_url ); ?>" />
 		</div>
Index: wp-admin/css/wp-admin.dev.css
===================================================================
--- wp-admin/css/wp-admin.dev.css	(revision 20762)
+++ wp-admin/css/wp-admin.dev.css	(working copy)
@@ -5476,7 +5476,7 @@
 
 .install-theme-info {
 	display: none;
-	padding: 45px 20px 15px;
+	padding: 45px 20px 60px;
 }
 
 .single-theme .install-theme-info {