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In Bootstrap cards, the 'card-header ___' class is used for adding header content.

  • header-content
  • title
  • heading
  • card-title
The correct option is card-title. The 'card-header' class is used to define the header section of a Bootstrap card, and 'card-title' is specifically used for adding a title or heading to the card header.
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Creating a dark mode theme in Bootstrap involves customizing the '___' SASS variables.

  • $primary-dark
  • $dark-mode
  • $theme-dark
  • $bg-dark
The correct SASS variables to customize for dark mode are '$theme-dark'. These variables control the dark mode styling across various components in Bootstrap.
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For older browsers, implementing CSS3 features requires the use of '___' or similar tools.

  • Modernizr
  • Polyfills
  • Shims
  • Transpilers
Older browsers lack support for CSS3, so using polyfills to fill the feature gaps is essential. Polyfills enable browsers to mimic the behavior of newer features.
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If you need to implement a dynamic form submission within a Bootstrap modal using JavaScript, what steps would you follow?

  • Use AJAX to submit the form asynchronously, handle form submission events, update modal content dynamically.
  • Attach a form submission listener, use Bootstrap's modal events, fetch form data using JavaScript, update modal content.
  • Embed an iframe within the modal to handle form submission, utilize Bootstrap's built-in form submission methods.
  • Use an external library for form submission, trigger modal events on form submission, update modal content based on the form data.
In this scenario, you would attach a form submission listener to the form inside the modal. Utilize Bootstrap's modal events, fetch form data using JavaScript, and update modal content dynamically.
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Customizing Bootstrap's grid breakpoints requires altering the '___' SASS variables.

  • $grid-breakpoints
  • $breakpoints
  • $grid-media
  • $container-breakpoints
Bootstrap utilizes the $breakpoints variable to define the grid breakpoints. Modifying this variable allows customization of the grid breakpoints in the Bootstrap grid system.
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The Bootstrap grid system is based on ___ columns.

  • 10
  • 12
  • 16
  • 8
The Bootstrap grid system is based on a 12-column layout. This allows for flexible and responsive designs, where the page is divided into 12 equal-width columns, making it easy to create various layouts for different screen sizes.
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Bootstrap uses ___ to convey the importance and hierarchy of the content to screen readers.

  • role
  • aria-label
  • aria-hidden
  • aria-describedby
Bootstrap utilizes the aria-label attribute to communicate the significance and structure of content to screen readers. This attribute helps in creating accessible and meaningful user interfaces.
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Describe the process of integrating Bootstrap's carousel functionality with custom JavaScript controls.

  • CustomizeCarousel();
  • CarouselControl();
  • ControlCarousel();
  • ManageCarousel();
Integrating Bootstrap's carousel functionality with custom JavaScript controls involves using the CarouselControl() function. This function allows you to customize the controls for the Bootstrap carousel. Other options are not the correct method.
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How would you address a situation where your CSS overrides are not being applied due to Bootstrap's specificity?

  • Increase the specificity of your CSS selectors.
  • Use !important to force the application of your styles.
  • Ensure that your styles are loaded after Bootstrap's CSS.
  • Remove Bootstrap's CSS file from the project.
Increasing specificity, ensuring proper file order, and understanding the cascade are crucial. Using !important is generally discouraged due to its potential side effects. Removing Bootstrap's CSS file is not a practical solution. Understanding the CSS cascade and selector specificity is fundamental for effective styling.
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How does Bootstrap's CSS prioritize responsiveness in mobile-first design?

  • Media Queries
  • Fixed Widths
  • Inline Styles
  • Flexbox
Bootstrap achieves responsiveness in mobile-first design through the use of Media Queries. These queries allow CSS rules to be applied based on characteristics such as screen size, ensuring a flexible and adaptive layout.
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