Use the flex-*-column-reverse class to display flex items vertically and reversed on different screen sizes.Here’s the example of reversing flex items on medium device using “flex-md-column-reverse” class −   One   Two   Three In the same way, set for large devices using “flex-lg-column-reverse” class −   One   Two ... Read More

Set a grey border to an element, using the border-secondary class in Bootstrap 4.Add it like the following example − I have also included the “mystyle” class to style the div − .mystyle {   width: 250px;   height: 150px;   margin: 10px; } Let us see an example to ... Read More

The flex-column-reverse is used to display reversed flex items with vertical orientation. Add the flex-column-reverse class as in the following code snippet −After that, add flex items inside it −   Demo 1   Demo 2   Demo 3 You can try to run the following code to show flex ... Read More

To align gathered items from the start in different screens, use the .align-content-*-start class.Align the items as shown below in different screen sizes −Medium Screen Size   Work 1   Work 2   Work 3   Work 4   Work 5 Large Screen Size   Work 1   Work 2 ... Read More

To set an outline on a button that indicates positive action, you need to use the btn-outline-success class in Bootstrap.Here is how you can set it:   More (Green Outline) You can try to run the following code to implement the btn-outline-success class −ExampleLive Demo       ... Read More

Use .align-content-end class to align gathered items at the end in Bootstrap 4.To set the items at the end −

The hide.bs.tooltip event in Bootstrap fires when the tooltip is about to be hidden.Click the hide button first −$(".btn-default").click(function(){   $("[data-toggle='tooltip']").tooltip('hide'); });On clicking above the hide.bs.tooltip event fires and an alert generates −$("[data-toggle='tooltip']").on('hide.bs.tooltip', function(){   alert('Tooltip will hide now.'); });You can try to run the following code to implement the ... Read More

Use the .align-self-*-start class in Bootstrap 4 to align a flex item from the start on different screens.To align a flex item on different screens −Small Screen   Item 1   Item 2   Item 3   Item 4 Large Screen   Item 1   Item 2   Item 3 ... Read More

To set dark grey outlined border to a button, use the btn-outline-dark class.Include the brn-outline-dark class as if you add any other class to an element. Here, we have the button element since we want a dark grey outline for our button:   Dark gray outline Let us see an ... Read More

The btn-outline-primary class is used in Bootstrap 4 to set blue outlined button.Add blue outline to the button using the btn-outline-primary class as shown in the following code snippet −   Result You can try to run the following code to implement the btn-outline-primary class −ExampleLive Demo   ... Read More