Prase error while creating wordpress site navigation bar

Question

The Codes I typed are:-

<nav class="site-nav[enter image description here][1]'>

<?php

       $args = arrray(
            'theme_location' => 'primary'
           );
 ?>

 <?php
       wp_nav_menu($args); 
  ?>

</nav> 

Error Message:-

Parse error: syntax error, unexpected '=>' (T_DOUBLE_ARROW) in C:\wamp64\www\wp-content\themes\MyFirstSite\header.php on line 23