How to set WYSIWYG editor width within wp_editor() function?

This is my current code:

$initial_data = $this->options['my_plugin_editor'];
$settings = array(
    'quicktags' => array('buttons' => 'em,strong,link',),
    'quicktags' => true,
    'tinymce' => true,
    'textarea_rows' => 20,
);
$id = 'my_plugin_editor_options[my_plugin_editor]';
wp_editor($initial_data,$id,$settings);

The problem is I am unable to set the width of the editor. I can set the height 'textarea_rows' => 20, but I am not aware of a way how to set the width(cols).

If I am using a standard textarea without an editor, this is working well cols="120"

How to set cols in wp_editor function?

There are two parameters that you can use to change the size of the text editor generated with wp_editor(), here there are:

$settings = array(
    'editor_height' => 425, // In pixels, takes precedence and has no default value
    'textarea_rows' => 20,  // Has no visible effect if editor_height is set, default is 20
);

• If editor_height is provided, its raw value will be used
• Otherwise textarea_rows (or it’s default value of 20) will be used to calculate the matching height in pixels

Good to know:

Here are a few examples of the result of the conversion from textarea_rows to pixels (this is done on the client side):

• 0 to 3 => 100
• 4 => 113
• 5 => 133
• 10 => 230
• 15 => 328
• 20 => 425
• …