bootstrap 4 button size with code examples

Bootstrap 4 is a popular front-end development framework that allows developers to quickly and easily create responsive, mobile-first websites. One of the key features of Bootstrap 4 is its ability to easily customize the size of buttons using a variety of classes and utility classes. In this article, we'll take a look at how to change the size of buttons in Bootstrap 4 and provide code examples for each method.

The first method for changing the size of buttons in Bootstrap 4 is by using the pre-defined button classes. Bootstrap 4 includes several classes for changing the size of buttons, including .btn-lg, .btn-sm, and .btn-xs. These classes can be added to any <button> or <a> element to change its size.

Here's an example of how to use the .btn-lg class to create a large button:

<button class="btn btn-lg btn-primary">Large Button</button>

And here's an example of how to use the .btn-sm class to create a small button:

<button class="btn btn-sm btn-primary">Small Button</button>

Another way to change the size of buttons in Bootstrap 4 is by using utility classes. Bootstrap 4 includes several utility classes for controlling the padding and font-size of elements, including .p-* and .text-*. These classes can be added to any <button> or <a> element to change its size.

Here's an example of how to use the .p-3 class to add padding to a button:

<button class="btn btn-primary p-3">Padded Button</button>

And here's an example of how to use the .text-lg class to increase the font size of a button:

<button class="btn btn-primary text-lg">Large Font Button</button>

Another way to change the size of buttons in Bootstrap 4 is by using CSS custom properties. Bootstrap 4 uses CSS custom properties to allow developers to easily customize the design of their websites.

.custom-btn{
  --btn-padding: 1rem 1.5rem; /* change the padding of the button */
  --btn-font-size: 1.2rem; /* change the font-size of the button*/
  padding: var(--btn-padding);
  font-size: var(--btn-font-size);
}

And here's an example of how to use the custom class in HTML

<button class="btn btn-primary custom-btn">Customize Button</button>

In conclusion, Bootstrap 4 provides several ways to change the size of buttons, including pre-defined button classes, utility classes, and CSS custom properties. Each method has its own advantages, and the best option will depend on your specific use case. With these methods, you can easily create buttons of any size and style to fit your website's design.

Another feature that Bootstrap 4 offers is the ability to change the color of buttons using pre-defined classes. Bootstrap 4 provides a set of classes for coloring buttons, including .btn-primary, .btn-secondary, .btn-success, .btn-danger, .btn-warning, and .btn-info. These classes can be added to any <button> or <a> element to change its color.

Here's an example of how to use the .btn-primary class to create a blue button:

<button class="btn btn-primary">Primary Button</button>

And here's an example of how to use the .btn-danger class to create a red button:

<button class="btn btn-danger">Danger Button</button>

In addition, Bootstrap 4 also provides classes for styling buttons as outlined or as link. The .btn-outline-* classes can be used to create outlined buttons with a transparent background, and the .btn-link class can be used to create a link that looks like a button.

Here's an example of how to use the .btn-outline-primary class to create a blue outlined button:

<button class="btn btn-outline-primary">Outline Primary Button</button>

And here's an example of how to use the .btn-link class to create a link that looks like a button:

<a href="#" class="btn btn-link">Link Button</a>

Bootstrap 4 also provides classes to create block-level and active state of buttons.

<button class="btn btn-primary btn-block">Block level button</button>

<button class="btn btn-primary active">Active state button</button>

Finally, Bootstrap 4 also allows developers to create custom button styles using CSS. You can use the :hover, :active, :focus pseudo-classes to change the look of buttons when they are hovered over, clicked on, or in focus.

.custom-btn:hover{
  background-color: blue;
  color: white;
}

The above code changes the background color and text color of the button when hovered on.

In summary, Bootstrap 4 provides a wide range of classes and options for customizing the size, color, and style of buttons. Whether you're looking to create a large blue button or a small red outlined button, Bootstrap 4 has the tools to make it happen. With the ability to customize buttons with pre-defined classes, utility classes, CSS custom properties, and custom CSS, Bootstrap 4 makes it easy to create buttons that match the design of your website.

Popular questions

1. What are the pre-defined classes for changing the size of buttons in Bootstrap 4?

• The pre-defined classes for changing the size of buttons in Bootstrap 4 are .btn-lg, .btn-sm, and .btn-xs.

2. How can you change the padding of a button in Bootstrap 4?

• You can change the padding of a button in Bootstrap 4 by using the .p-* utility classes.

3. How can you change the font-size of a button in Bootstrap 4?

• You can change the font-size of a button in Bootstrap 4 by using the .text-* utility classes.

4. How can you customize the design of buttons in Bootstrap 4 using CSS custom properties?

• You can customize the design of buttons in Bootstrap 4 by using CSS custom properties, such as --btn-padding and --btn-font-size, and then set the values for the button.

5. What are the classes for creating outlined and link buttons in Bootstrap 4?

• The classes for creating outlined buttons in Bootstrap 4 are .btn-outline-* classes, and the class for creating a link that looks like a button is .btn-link.

Tag

Buttons