Enhancing the appearance of buttons with hover effects in Twitter Bootstrap

I am interested in customizing the hover button styling for Bootstrap v3.2. The default behavior is to darken on hover, but I would like to make it lighter instead.

Although I checked the Buttons Less variables, I couldn't find an option specifically for button hover styling.

In SASS, one solution is as follows:

@import "packages/stylesheets/bootstrap/bootstrap";

.btn {
  &:hover {
    background: yellow;
  }
}

However, this code changes the background color for all buttons to yellow.

Is there a way to apply this change to all buttons without having to specify each button type individually?

The only workaround I have found is to customize each button type separately, like so:

@import "packages/stylesheets/bootstrap/bootstrap";

.btn-primary {
  &:hover {
    background: lighten($btn-primary-bg, 5%);
  }
}
.btn-success {
  &:hover {
    background: lighten($btn-success-bg, 5%);
  }
}

Answer №1

Although Marcin's solution is effective, it may not be the most elegant because modifying bootstrap's source code could lead to losing all edits upon updating the base of bs.

To properly customize the button hover effect, create a new file such as "_buttons.scss" and include it in your main bootstrap/main file that includes both the base bootstrap and customized parts:

// Base bootstrap 3
@import "./vendor/bower_components/bootstrap-sass/assets/stylesheets/bootstrap.scss";
// My custom buttons
@import "_buttons.scss"

This method allows you to override default styles while maintaining the look and feel of default bootstrap elements. It safeguards your changes from being overwritten during future updates.

In the _buttons.scss file, define the button hovers as you described:

// My custom variation for btn-primary
.btn-primary {
  &:hover {
    background: lighten($btn-primary-bg, 5%);
  }
}

If you wish to apply these changes globally, update the mixins responsible for button output in the override file. For example, in myproject/assets/scss/mixins/_buttons.scss:

// My custom mixin for button-variant override file
// Only include the customization you want
// Here, I am customizing the background-color 
@mixin button-variant($color, $background, $border) {
  &:hover {
    background-color: darken($background, 40%);
  }
}

Then, include this file in your main file:

// Base bootstrap 3
@import "./vendor/bower_components/bootstrap-sass/assets/stylesheets/bootstrap.scss";
// My custom buttons
@import "_buttons.scss"
@import "mixins/_buttons.scss"

Benefits of this approach: 1) Easily update bootstrap base when needed 2) Keep custom button styles in one file for easy management 3) Utilize the same bootstrap base across multiple projects

Hope this information proves helpful. Regards, M.

Answer №2

The solution I discovered may not be the most elegant (as it requires modifying the bootstrap file), but it gets the job done.

To implement this solution, simply navigate to the mixins/_buttons.scss file and make the following change:

background-color: darken($background, 10%);

Replace it with:

background-color: lighten($background, 10%);

This adjustment should work for all buttons across your project.

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