Index: wp-admin/ms-sites.php
===================================================================
--- wp-admin/ms-sites.php	(revision 13549)
+++ wp-admin/ms-sites.php	(working copy)
@@ -614,9 +614,9 @@
 						<th style="text-align:center;" scope='row'><?php _e('Site Address') ?></th>
 						<td>
 						<?php if ( is_subdomain_install() ) { ?>
-							<input name="blog[domain]" type="text" title="<?php _e('Domain') ?>"/>.<?php echo $current_site->domain;?>
+							<input name="blog[domain]" type="text" title="<?php _e('Domain') ?>" style="width: 400px;"/>.<?php echo $current_site->domain;?>
 						<?php } else {
-							echo $current_site->domain . $current_site->path ?><input name="blog[domain]" type="text" title="<?php _e('Domain') ?>"/>
+							echo $current_site->domain . $current_site->path ?><input name="blog[domain]" type="text" title="<?php _e('Domain') ?>" style="width: 400px;"/>
 						<?php }
 						echo "<p>" . __( 'Only the characters a-z and 0-9 recommended.' ) . "</p>";
 						?>