CSS classes of base elements

The DHTMLX library provides a set of CSS classes that you can add to HTML elements to style them in your web project outside DHTMLX widgets.

The principle of these CSS classes' naming is based on the BEM methodology.

Therefore, a class name includes three parts:

Block name
Element name
Modifier name

Block names and element names are separated by a double underscore: block__element.

Block and elements' names are separated from modifier names by a double hyphen: block--modifier, block__element--modifier.

The 'dhx' prefix is used at the beginning of all class names in the DHTMLX library

The full list of CSS classes of the DHTMLX library you can use to style HTML elements is described below.

Form group

Block

dhx_form-group - Use this class to apply the same formatting to different HTML elements at once. It includes modifiers for manipulating the appearance and state of a layout.

Modifiers

dhx_form-group--no-message-holder - Removes the bottom margin where a text for a premessage could be placed
dhx_form-group--disabled - A form-group has a disabled state. It can't be activated (selected, clicked on, typed into) or accept focus.
dhx_form-group--hidden - Hides a form group visually
dhx_form-group--required - Adds the required mark to a label inside a form group
dhx_form-group--state_error - Marks the content of input/label red. Indicates error
dhx_form-group--state_success - Marks the content of input/label green. Indicates success
dhx_form-group--label_sr - Hides a label inside a form group visually
dhx_form-group--inline - Puts a label and an input in one line
dhx_form-group--textarea - Add this class to the form group, which contains a < textarea > element, to style it

Here's what markup looks like using a form-group example:

<!-- Form-group block -->
<div class="dhx_form-group ">
    <!-- Label block -->
    <label for="input" class="dhx_label ">I am label</label>
    <!-- 'wrapper' element in the 'input' block-->
    <div class="dhx_input__wrapper">
        <!-- 'container' element in the 'input' block-->
        <div class="dhx_input__container">
            <!-- Style the input-->
            <input id="input" 
                    placeholder="I am input" 
                    class="dhx_input" 
                    autocomplete="off"
            >
        </div>
    </div>
</div>

Button

Block

dhx_button - Add this class to a < button > element to reset/normalize default browser styles.

Elements

dhx_button__icon - Container for an icon
dhx_button__text - Container for button text/value
dhx_button__loading - Use this class to create a container for the loading mode
dhx_button__loading-icon - Use this class together with the "dhx_button__loading" class to create an icon container for the loading mode

Modifiers

dhx_button--circle - Use this class either to add rounded corners to a button with value or to create a circular button that contains only an icon
dhx_button--width_full - Add this class to adjust the width of a button to the width of its container
dhx_button--disabled - Use this class to change the button view to disabled. Instead of this class you can add the disabled attribute.
dhx_button--loading - Apply the loading modifier to switch the button to the loading state. Both the "dhx_button__loading" and "dhx_button__loading-icon" elements must be applied.
dhx_button--size_small - Use this class to add a small button
dhx_button--size_medium - Use this class to add a medium button
dhx_button--view_flat - Use this class to create a flat button
dhx_button--view_link - Use this class to create a link button
dhx_button--color_primary - Blue button (#0288d1). Use this modifier together with the 'view' modifier
dhx_button--color_secondary - Gray button (#4d4d4d). Use this modifier together with the 'view' modifier
dhx_button--color_danger - Red button (#ff5252). Use this modifier together with the 'view' modifier
dhx_button--color_success - Green button (#0ab169). Use this class together with the 'view' modifier

Here is an example how you can specify a markup for a button:

<!-- Create a link button with red color-->
<button type="button" 
        class="dhx_button dhx_button--color_danger dhx_button--view_link">
    <!-- The button has the "plus" icon-->  
    <span class="dhx_button__icon dxi dxi-plus"></span>
    <!-- The "Send text" button-->
    <span class="dhx_button__text">Send</span>
</button>

Label

Block

dhx_label - Add this class to a < label > element inside a form group to style it

You can style a < label > element, as in:

<label for="element-id" class="dhx_label">Email</label>

Checkbox

Block

dhx_checkbox - Add this class to the "dhx_form-group" class inside a < label > element to create a label for a checkbox.

Elements

dhx_checkbox__input - Add this class to the < input type='checkbox' > element to hide a native browser checkbox but save its behavior
dhx_checkbox__visual-input - Add this class to a < span > element to display a checkbox with its native browser behavior visually

You can change the appearance of a native browser checkbox by using a markup given below:

<!-- Create a label for a checkbox 
        and put it and an input in one line inside the form-group-->
<label class="dhx_form-group dhx_checkbox dhx_form-group--inline" 
        style="margin-left: calc(116px);">
    <!-- Hide a native browser checkbox but save its behavior-->    
    <input type="checkbox" class="dhx_checkbox__input">
    <!-- Display the checkbox with its native browser behavior visually-->
    <span class="dhx_checkbox__visual-input"></span>
    <!-- Style the checkbox label-->
    <span class="dhx_label ">I am checkbox</span>
</label>

Radiobutton

Block

dhx_radiobutton - Add this class to the "dhx_form-group" class inside a < label > element to create a label for a radiobutton.

Elements

dhx_radiobutton__input - Add this class to the < input type='radiobutton' > element to hide a native browser radiobutton but save its behavior
dhx_radiobutton__visual-input - Add this class to a < span > element to display a radiobutton with its native browser behavior visually

You can apply a markup to style a radiobutton, like this:

<!-- Create a label for a radiobutton 
        and put it and an input in one line inside the form-group-->
<label class="dhx_form-group dhx_radiobutton dhx_form-group--inline" 
        style="margin-left: calc(116px);">
    <!-- Hide a native browser radiobutton but save its behavior--> 
    <input type="radiobutton" class="dhx_radiobutton__input">
    <!-- Display the radiobutton with its native browser behavior visually-->
    <span class="dhx_radiobutton__visual-input"></span>
    <!-- Style the radiobutton label-->
    <span class="dhx_label ">I am radiobutton</span>
</label>

Input

Block

dhx_input - Add this class to an < input type='text' > element to style it

Elements

dhx_input__wrapper - Wrapper for an input container and caption
dhx_input__container - Container for an input with icon
dhx_input__icon - Container for an input icon
dhx_input__caption - Container for an input caption

Modifiers

dhx_input--icon-padding - Apply this class to create a special padding inside an input where an icon will be placed
dhx_input--textarea - Apply this class to style a < textarea > element
dhx_input--textinput - Removes all borders from an < input > element

An example of the input markup is given below:

<!-- Create a form-group and put an input and its label in one line-->
<div class="dhx_form-group dhx_form-group--inline">
    <!-- Create the label for the input and style it-->
    <label for="input" class="dhx_label" 
            style="min-width: 100px; max-width: 100px;">I am label</label>
    <!-- Create a wrapper for the input container inside form-group -->     
    <div class="dhx_input__wrapper">
        <!-- Create the container for the input with icon-->
        <div class="dhx_input__container">
            <!-- Put the "dxi-magnify" icon into the container-->
            <div class="dhx_input__icon dxi dxi-magnify"></div>
            <!-- Create the input with the padding for the icon-->
            <input id="input" placeholder="I am input" name="" 
                    class="dhx_input dhx_input--icon-padding" autocomplete="off">
        </div>
        <!--Create "Message text" caption -->
        <span class="dhx_input__caption">Message text</span>
    </div>
</div>

Select

Block

dhx_select - Add this class to a < select > tag to style it

The markup of select looks like this:

<!-- Create a form-group and put an input and its label in one line-->
<div class="dhx_form-group dhx_form-group--inline">
    <!-- Create the label for the select and style it-->
    <label for="select_id" class="dhx_label" 
            style="min-width: 100px; max-width: 100px;">select</label>
    <!-- Create the wrapper for the input container inside form-group -->           
    <div class="dhx_input__wrapper">
        <!-- Create the container for the input with icon-->
        <div class="dhx_input__container">
            <!-- Put the "dxi-menu-down" icon into the container-->
            <span class="dhx_input__icon dxi dxi-menu-down"></span>
            <select id="select_id" >
                <option></option>
                <option value="1">1</option>
                <option value="2">2</option>
                <option value="3">3</option>
                <option value="4">4</option>
                <option value="5">5</option>
            </select>
        </div>
        <!--Create "Choose the number 5" caption -->
        <span class="dhx_input__caption">Choose the number 5</span>
    </div>
</div>