Costix Documentation

Firstly, we would like to thank you for purchasing Costix WordPress theme and chosen it for your website. We outline all kinds of good information, and provide you with all the details you need to use the WordPress theme.

If you are unable to find your answer here in our documentation, feel free to ask for help from our support team, all you have to do is submitting a ticket via our Support Ticket system or email us: [email protected].

View other great wordpress themes

The instruction is to help you with installation of the Costix theme.

Download packages

Purchase Costix template from ThemeForest then you can download our template package on there.

After purchase our theme, please go to Dashboard ->> OpalTheme ->> License then enter user name envato and purchase code in there. It allow you to update theme or code when our theme have upgrade new.

Theme Installation

Installing a WordPress theme is super easy, you’ll see our video guide:

Plugins Installation

Installing plugins of theme is super easy, you’ll see our video guide:

Install Data Demo

1.Install Data Demo

We have function Opal Theme to import oneclick for theme to easy and quickly .

Step 1- Login to the WordPress Dashboard.

Step 2- From the OpalTheme --> Import demos.

Step 3 - Click to button "Import Demo " and you will see all our demos, please choose one demo that you want to import and click to button "Set up".

If you want to know more about that please follow our video guide to know more :

2. Revolution Slider

1.If you choose import data by tool of wordpress

From the WordPress admin area go to Revolution Slider >> Import Slider and select Slider file on our package.

2.If you choose import data by one click import

Revolution slider will be displayed after import data by One click import.

 you can see all slider displayed in here and you can

 + Embed slider.

+Export.

+Delete.

+Duplicate.

+Preview.

+Settings.

+Edit slider.

Widgets Installation

Install widget

1.If you choose import data by tool of wordpress

a. Install widget

Go to Admin Panel -> Appearance -> Widgets.

You can see all our widgets, easy to configure by drag and drop Widgets to sidebar.

Then you can use sidebars to position you want. Even you can use sidebar for MegaMenu.

Morever you can search and add more plugins for your purpose by searching on the internet.

Follow our video guide to know more :

Set Up Menu

1. Creating your Menu

Step 1- Login to the WordPress Dashboard.

Step 2- From the 'Appearance' menu on the left-hand side of the Dashboard, select the 'Menus' option to bring up the Menu Editor.

Step 3 - Select Create a new menu at the top of the page.

Step 4 - Enter a name for your new menu in the Menu Name box.

Step 5 - Click the Create Menu button. Your menu is now defined, and you can now add pages to it (steps below).

Step 6 - Select the Pages that you want to add by clicking the checkbox next to each Page's title.

Step 7 - Click the Add to Menu button located at the bottom of this pane to add your selection(s) to the menu that you created in the previous step.

Step 8 Fill information of menu that you want to display.

Step 9 - Assign each Theme Location with a menu. You can assign menus to multiple Theme Locations.

Step 10 - Click the Save Menu button once you've added all the menu items you want. Your custom menu has now been saved.

Menu Home will be displayed.

Follow our video guide to know more :

Set Up Header

Set Up Header

Step 1 - From admin Dashboard, navigate to Header Builder > Add Profile Header

Step 2 - Using Elementor backend editor Costix then add element to your Header 

Step 3 - Build your header style with unlimited layout

Header layout for you.

Front end look like :

Elementor Layout setting

Step 4 - Navigate to : Apperance > Customize > Header.

Choose your header for  page.

Follow our video guide to know more :

Set Up Home Page

You can quickly build a home page using Elementor for WordPress that is drag and drop frontend and backend page builder plugin that will save you tons of time working on the site content. You will be able to take full control over your WordPress site, build any layout you can imagine – no programming knowledge required

From your Dashboard admin Navigate to Pages

  - Select All Pages to see all page then click edit one page you want

  - Select Add New to create new page

A. How to use Elementor

Have you ever used Elementor ? Please follow that guide first : Elementor guide

Official Plugin Documentation For More information about the Elementor check the official documentation.

Watch video about Elementor

Backend Editor Costix

How to use Back End Costix

a. Add and modify Row Layout

Step 1 - Go to your page / post, first activate the backend editor and click Edit with Elementor

Step 2 - You will see all element in left sidebar, please choose element that you want to use.

or you will see button "Add New Section" ,"Add Template" , please click to button to add element.

Step 3 - To change the Row layout ( number of columns ) you need to click button content will display in leftsidebar.

b. Edit Element

Click on the Edit This Element (pencil icon) to Edit the Row element , when you click to button all content will display in left sidebar follow you can change .

c. Remove Element

Trash Box Icon - To Remove Row, Column or Module you need to click the Trash Box icon.

d. Add Element

Trash Box Icon - To Add Row, Column , please click to add icon.

3. Page Options

a. Page Attributes

You can select page attributes on right sidebar of page admin layout. Each Page templates have each styles .

b. Page configure default template

For each page you can change the page layout style, custom header , custom footer and much more! Check the screenshot and read the documentation to see how it works .

• Layout - Select if you want the page to have a Fullwidth layout and config sidebar.
• Header Layout - Select if you want to custom header in customize.
• Footer Layout -  Select if you want to custom footer in customize.
• Breadcrumbs - Select if you want to custom breadcrumb in customize.

C. Set a page as Home Page

Step 1 - Go to Settings > Reading in your WordPress Dashboard panel.

Step 2 - Set "Front page displays" to a "Static Page".

Step 3 - In the drop down menu for "Front Page" choose a page which will be your home page.

Step 4 - Leave the drop down menu for "Posts page" empty, as this is not used by the theme.

Step 5 - Save changes.

Set Up Template

Set Up Template

Step 1 - From admin Dashboard, navigate to My templates

Step 2 - Click to Add New popup to require add new template is display, please input name your template and click Create Template

Step 3 - Using Elementor backend editor Costix then add element to your Template 

Step 4 - Drag or drop element that you want to build your template style with unlimited layout

Step 5 - Go to page and please click button Add Template

Step 6 - Choose tab My Template and you can add template that has created to page.

Set Up Blog Page

1. Create the blog post

Step 1 - Log in to your WordPress Administration Panel (Dashboard).

Step 2 - Click the 'Posts' tab.

Step 3 - Click the 'Add New' sub-tab.

Step 4 - Start filling in the blanks: enter your post title in the upper field , you can add content of post by use elementor to create.

Step 5 - As needed, select a category, add tags, fill in the meta setings below the editor.

Step 6 - Upload a featured image for your Post.

Step 7 - Select Post Format. You can create blog post with a lot of Formats like link, gallery, image ..... Select format on Format box from in right sidebar .

Step 9 -  When your post is ready, click Publish.

2. Manager current all blogs

Navigate to Posts → All Posts

You can see all informations of you blog post, add new, edit or delete them.

3. Create Blog Page

Option 1. Create Blog Page with Elementor

Step 1 - Log in to your WordPress Administration Panel (Dashboard).

Step 2 - Click on Pages > Add New.

Step 3 - Give your page a name then Change the Editor to Backend Editor ( you need to have the Elementor plugin activated ).

Step 4 - Click on the Edit with Elementor button

Step 5 - Select the WordPress widget.

Front end look like :

Option 2. Create Blog page with Blog template

Step 1 - Log in to your WordPress Administration Panel (Dashboard).

Step 2 - Click on Pages > Add New.

Step 3 - From Page Attribubtes -> Select Template : Blog.

Step 4 - Set up Page configuration

• Layout - Select if you want the page to have a Fullwidth layout and config sidebar.
• Header Layout - Select if you want to custom header in customize.
• Footer Layout -  Select if you want to custom footer in customize.
• Breadcrumbs - Select if you want to custom breadcrumb in customize.

4. Blog Global Configure

Step 1 - From your admin Dashboard navigate to : Apperance > Customize >  Blog

Step 2 - Set up Archive & Category Setting.

You can set style blog.

Follow our video guide to know more :

Set Up Portfolio Page

Step 1 - Log in to your WordPress Administration Panel (Dashboard).

Step 2 - Click the 'Portfolio' tab.

Step 3 - Click the 'Add New' sub-tab.

Step 4 - Start filling in the blanks: enter your portfolio title in the upper field , you can add content of post by use elementor to create.

Step 5 - As needed, select a category, add tags, fill in the meta setings below the editor.

Step 6 - Upload a featured image for your post.

Step 7 -  When your post is ready, click Publish.

Follow our video guide to know more :

Set Up Footer

Set Up Footer

Step 1 - From admin Dashboard, navigate to Footer > Add Profile Footer

Step 2 - Using Elementor backend editor Costix then add element to your Footer 

Step 3 - Build your footer style with unlimited layout

Footer layout for you.

Footer default.

Front end look like :

Step 4 - After create your footer profile. Navigate to Dashboard->> Homepage and scrolldown until you see Page setting ->> choose Footer and choose footer that you want to use.

Or you can choose footer in Customizer. Navigate to : Apperance > Customize > Footer.

Choose your footer for  page.

Follow our video guide to know more :

Set Up Plugin Breabcrumb navXT

Step 1 - Log in to your WordPress Administration Panel (Dashboard)

Step 2 - Click the ' Plugins' tab.

Step 3 - Click the 'Add New.

Set Up Elementor config

1. Settings

Step 1 - Log in to your WordPress Administration Panel (Dashboard)

Step 2 - Click the ' Elementor.

2. Granular controls

Step 1 - Log in to your WordPress Administration Panel (Dashboard)

Step 2 - Click the ' Elementor' tab.

Step 3 - Click the 'Granular controls.

Step 4 - You will see config for set up control for elementor , with General controls tab.

Create Newsletter

We are using MailChimp for WP plugin for Newsletter subscribe. You can read more about MailChimp from here

Follow that step below to help you can collect email of subscribers.

Step 1 - Signup for Mailchimp account then create your lists to collect email .

Step 2 - Install and active plugin MailChimp for WP .

Step 3 - Navigate to MailChimp for WP > MailChimp then connect with your mailchimp account you created from step 1 .

Step 4 -  Create mailchimp form to collect email. Navigate to Forms

Import HTML Code below on section Form mark-up Source

Source :

	<div class="form-style-1">
		<div class="input-group">
		 <input id="mc4wp_email" class="form-control" name="EMAIL" required="required" type="email" placeholder="Enter your E-mail" />
		  <div>
			<button type="submit">SUBSCRIBE</button>
		  </div>  
		</div>
	</div>

Step 5 - After creating from of your plugin. You must set position where you want to display.

Going Appearance -> Widgets then drag mailchimp widget to Newsletter Sidebar. You can bring that sidebar to every position you want. ( You can drag to left, right sidebar for each page. You can drag to Footer position.... )

Create Contact Page

1. Create Contact Form.

Make sure you install and active Contact Form 7 plugin to continue reading.

Step 1 - Log in to your WordPress Dashboard, go to Contact > Add New

Step 2 - Give a Name to your form and change Mail Info

Step 3 - Edit the Form field to change the Form Layout

2. Create Contact Page

Step 1 - Log in to your WordPress Administration Panel (Dashboard).

Step 2 - Click on Pages > Add New.

Step 3 - Give your page a name then Change the Editor to Backend Editor ( you need to have the Elementor plugin activated ).

Step 4 - Click on the Add Element button

Step 5 - Select the Contact Form 7 element.

Step 6 - The Contact Form 7 Settings should appear. Select the Form you want to use you can also customize the Color and change the fields layout and button design
Step 7 - Update / Publish your page

Costix Theme use Customizer provides an ultra effective and intuitive way to customize theme layout & setting with real-time preview. Bring all of settings to customizer, you do not need to using another theme option anymore

To access Customizer go to your admin Dashboard  Navigate to Appearance >> Customize

1. Typography : Manage general setting like your font, font size, ....

2.Color: select your color for global.

3.Layout: Set up layout for global.

3. Header Setting : Set up social for header

4. Blog : manage global setting for Blog

5. Mobile :Set up config for mobile

6. Animation :Set up config for animation

7. Footer :Set up config for footer

8. Site Indentity :Set up logo and site icon

9. Menu: manage setting of Menu

Specially, We have option for page maintenance

Open config and please choose option active and choose page maintenance

To create page Maintenance, please go to Page->> Add New and use elementor to create this page.

The easiest way to translate theme to the language of your choice is to use "WPML" plugin.

- To begin, be sure you have the WPML Plugin installed and activated, along with the WPML String Translation plugin.

- To set up WPML the first time, follow their Getting Started Guide.To begin translating, select WPML (in the Dashboard menu) -> String Translation. You should see a list of the strings in the theme (there should be only four), with blue translation links to the right. Click these links to reveal the list of languages you use on your blog and the associated translations.

- How to set and translate main features of the theme

• Using translation management http://wpml.org/documentation/translating-your-contents/using-the-translation-editor/
• Translation Management & Features – http://wpml.org/documentation/translating-your-contents/using-the-translation-editor/translation-management-features/
• Translating URL slugs – http://wpml.org/documentation/getting-started-guide/translating-page-slugs/

- How to scan strings coming from the theme

• http://wpml.org/documentation/getting-started-guide/theme-localization/

- How to translate strings using String Translation

• http://wpml.org/documentation/getting-started-guide/string-translation/

- If adjustment is needed for WPML language switcher please also add this

• http://wpml.org/documentation/getting-started-guide/language-setup/custom-language-switcher/

- If you need more help with WPML plugin. Please go WPML Forum

1. How to update Theme

a. Update Theme via WordPress

Updating the theme via WordPress is very similar to the install process via WordPress. Make sure you had backup all of your customization in our theme.
Follow the steps below to update your theme via WordPress:

Step 1 - Download latest theme package on ThemeForest

Step 2 - Log into your WordPress Dashboard.

Step 3 - Go to Appearance > Themes.

Step 4 - Deactivate the Costix Theme by simply activating a different theme. Once you activate a different theme, you can delete the Costix theme.

Step 5 - Delete the Costix Theme. Do not worry, your content will not be lost!

Step 6 - Then simply upload the newest “costix_theme.zip” file in the Appearance > Themes section. Click on the Install Themes tab at the top and choose to upload the zip file. You have this step explained in section: Theme Installation via WordPress.

b. Update theme via FTP

Updating the theme via FTP is very similar to the install process via FTP.
Follow the steps below to update your theme via FTP:

Step 1 - Go to .../wp-content > themes location on your server using a FTP client and backup your "Costix" theme folder by saving it to your computer, or you can choose to simply delete it. Your content will not be lost.

Step 2 - Download the new version of Costix theme from your Themeforest and retrieve Costix folder by unpacking the zip that you download from Themeforest and strollik_theme.zip.

Step 3 - Then simply drag and drop the new "Costix" theme folder into .../wp-content > themes location. Choose to “Replace” the current one if you did not delete it.

Step 4 - Log into your WordPress Dashboard, go to Appearance > Themes and activate the new Costix theme.

2. How to create Child Theme

What is a Child Theme?
A child theme is a theme that inherits the functionality of another theme, called the parent theme. Child themes allow you to modify, or add to the functionality of that parent theme. A child theme is the best, safest, and easiest way to modify an existing theme, whether you want to make a few tiny changes or extensive changes. Instead of modifying the theme files directly, you can create a child theme and override within.

Why use a Child Theme?

if you modify an existing theme and it is updated, your changes will be lost. With a child theme, you can update the parent theme (which might be important for security or functionality) and still keep your changes. It’s a great way to get started if you are just learning WordPress theme development.

How to create Create child ?

Follow that documentation to create Child Theme  Child Themes - Codex

Using that plugin to create Child Theme : One Click Child Theme

3. How to Speed Optimization

If you think your website takes too much time to load maybe you should.

1. Install a Cache Plugin for WordPress. We recommend W3 Total Cache.
2. Install an Image Compress Plugin. We recommend WP Smush It.
3. Install a Database Optimizer Plugin We recommend WP Optimize
4. Reduce the number of posts on the page
5. Reduce the number of unnecessary plugins.
6. Use more icons and less images.

To install plugin Autoptimize , please go to plugin and find plugin "Autoptimize"

Next go to Dashboard ->> Settings ->> Autoptimize

Set up option main like :

Option Extra

Plugin Cache to delete all caches of theme.

Then install plugin cache :

Next go to Dashboard ->> Settings ->> Cache

Choose option caching on to turn on plugin :

Then you can click button test cache to check it

If you are unable to find your answer here in our documentation, please take a photo screenshot with description detail about your problem or idea. Send all to email : [email protected] . Our technical team will check and try their best to help

Our support scope

Our support covers configuration, building site as demo, trouble using any features, and bug fixes. We don't provide support for customizations or 3rd party extension.

Our support time

We try our best to monitor the email around the clock, however, this is not always possible due to different time zones. We will try to reply you as fast as we can.

Our working time is 8.00 AM - 5.30 PM, Monday to Friday (GMT+7). So if ask for help in the weekend, you may have to wait a little bit for support and please be patient.