JosephLenton#18 improved line number CSS

The line numbers are now in better alignment with the lines,
and with the file header above the code area.

Author: joseph lenton

example/very_wide_stack.php

@@ -1,6 +1,6 @@
 <?php
 	require( dirname(__FILE__) . '/../src/php_error.php' );
-	\php_error\reportErrors();
+	\php_error\reportErrors( array('display_line_numbers' => true) );
 
 	function a() {
 		b();

src/php_error.php

@@ -3281,7 +3281,7 @@ function displayHTML( Closure $head, $body=null, $javascript=null ) {
                         width: 100%;
                         -moz-box-sizing: border-box;
                         box-sizing: border-box;
-                        padding-left: 148px;
+                        padding-left: 166px;
 
                         overflow: hidden;
                     }
@@ -3341,7 +3341,18 @@ function displayHTML( Closure $head, $body=null, $javascript=null ) {
                                 display: inline-block;
                                 float: left;
                                 clear: both;
+
+                                position: relative;
                             }
+                                .error-file-line-number {
+                                    position: absolute;
+                                    top: 0;
+                                    right: 100%;
+                                    margin-right: 12px;
+                                    display: block;
+                                    text-indent: 0;
+                                    text-align: left;
+                                }
                     <?php
                     /*
                      * Stack Trace