The id Attribute

The HTML id attribute is used to specify a unique id for an HTML element (the value must be unique within the HTML document).
Using The id Attribute
The id attribute is used by CSS or JavaScript to perform certain tasks for the element with the specific id value.
In CSS, to select an element with a specific id, write a hash (#) character, followed by the id of the element:

HTML Symbol Entities

HTML entities were described in the previous chapter.
Many mathematical, technical, and currency symbols, are not present on a normal keyboard.
To add such symbols to an HTML page, you can use an HTML entity name.
If no entity name exists, you can use an entity number, a decimal, or hexadecimal reference. 0138872077


Use Bootstrap’s custom button styles for actions in forms, dialogs, and more with support for multiple sizes, states, and more.



Toggle the visibility of content across your project with a few classes and our JavaScript plugins.


Examples and usage guidelines for form control styles, layout options, and custom components for creating a wide variety of forms. 0138872077


Push notifications to your visitors with a toast, a lightweight and easily customizable alert message.


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Input group Easily extend form controls by adding text, buttons, or button groups on either side of textual inputs, custom selects, and custom file inputs.


Shadows Add or remove shadows to elements with box-shadow utilities.


Progress Documentation and examples for using Bootstrap custom progress bars featuring support for stacked bars, animated backgrounds, and text labels.


Form Elements This chapter describes all the different HTML form elements.
The input Element
One of the most used form element is the input element.
The input element can be displayed in several ways, depending on the type attribute.


Overflow Use these shorthand utilities for quickly configuring how content overflows an element.


Text Documentation and examples for common text utilities to control alignment, wrapping, weight, and more.