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Bootstrap4 Alert

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Basic Alert

Bootstrap 4 provides an easy way to create predefined alert messages


Alert with Links

Bootstrap4 provides .alert-link utility class to quickly provide matching colored links within any alert.


Alert with Dismissing

Bootstrap4 provides .alert-dismissible utility class to dismiss an alert when corresponding button is clicked.

Alert with Content

Alerts can also contain additional HTML elements like headings, paragraphs and dividers.


Alert Classes

The following table provides a list of all classes to create alert.

Class Explanation
.alert Creates an alert message box.
.alert-primary Blue alert. Indicates an important action.
.alert-secondary Grey alert. Indicates a "less" important action.
.alert-success Green alert. Indicates a successful or positive action.
.alert-danger Red alert. Indicates a dangerous or potentially negative action.
.alert-warning Yellow alert. Indicates caution should be taken with this action.
.alert-info Teal alert. Indicates a neutral informative change or action.
.alert-light Light alert. Light grey alert box.
.alert-dark Dark alert. Dark grey alert box.
.alert-link Used on links inside alerts to provide matching colored links.
.alert-heading Adds css color: inherit property to the specified element
.close Styles a close icon. This is often used for alerts and modals. Often used together with the × symbol to create the actual icon (a better looking "x"). It floats right by default.

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