Module Information
Module Admin


app/modules/admin/Module.php

app/modules/admin/views/default/index.php

Create Module ASSETS in Web folder with content


app/modules/admin/web/assets/css/style.css

app/modules/admin/web/assets/js/main.js

Create Module views layouts


app/modules/admin/views/layouts/main.php

Change your Module and change layouts way in your config web.php


<?php

$config = [

    'id' => 'basic',

    'basePath' => dirname(__DIR__),

    'bootstrap' => ['gii'],

    'modules' => [

        'gii' => [

            'class' => 'yii\gii\Module',

            'allowedIPs' => ['127.0.0.1', '::1', '192.168.0.*', '192.168.178.20'] // adjust this to your needs

        ],

        'admin' => [

            'class' => 'app\modules\admin\Module',

            // the layout that should be applied for views within this module

            'layout' => 'main',

        ],

    ],

...........

Create Module new assets settings class
In modules/admin directory create file AdminAsset.php with content


<?php

namespace app\modules\admin;

use yii\web\AssetBundle;



class AdminAsset extends AssetBundle

{

    public $sourcePath = '@app/modules/admin/web/assets';

    public $css = [

        'css/style.css',

    ];

    public $depends = [

        'yii\web\YiiAsset',

        'yii\bootstrap\BootstrapAsset',

    ];

}

Go to your Admin Module layouts/main.php and replace your assets registration and namespace with


use app\modules\admin\AdminAsset;



AdminAsset::register($this);