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 hide.bs.tooltip event −ExampleLive Demo       Bootstrap Example                             Event     Here tooltip will be displayed using the "Show" buttpn and can be hidden ... Read More

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

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       Bootstrap Example                         Python   The following are the Python Technologies :       Jython     WxPython     For more, click below:   More (Green Outline)

Use the bg-primary class in Bootstrap 4, to add important stuff to a card and set blue background color.Style the Bootstrap 4 card as in the following code snippet −   Medical Books I have set the body of the card in the card-body class −   Medical Books To implement the bg-primary class in Bootstarp 4, you can try to run the following code −ExampleLive Demo       Bootstrap Example                             Books           History Books               Medical Books      

The shown.bs.tooltip event in Bootstrap fires when the tooltip is completely displayed:$("[data-toggle='tooltip']").on('shown.bs.tooltip', function(){   alert('Tooltip is completely visible now.'); });The data-toggle attribute above is set on a link, wherein the popup will originate on button click as shown in the following code snippet:   Timings You can try to run the following code to implement the shown.bs.tooltip event −ExampleLive Demo       Bootstrap Example                             Event     Here tooltip will be displayed using the ... Read More

Use the border-danger class to set a red border to an element.Set the border-danger class to an element as if we include any other class −   Red Border Above, we have also set another class “new”, to style the element − .new {   width: 120px;   height: 120px;   margin: 20px; } You can try to run the following code to implement the border-danger class −ExampleLive Demo       Bootstrap Example                             .new {       width: 120px;       height: 120px;       margin: 20px;      }         Rectangle with red border:   Red Border

Use .align-content-*-around to align gathered items "around" on different screens in Bootstrap 4.Align the gathered items around on different devices as shown below −Small DevicesMedium DevicesLarge DevicesYou can try to run the following code to implement the align-content-*-around class −ExampleLive Demo       Bootstrap Example                               Example           One       Two       Three       Four       Five       Six ... Read More

Use align-middle class to place an element in the middle of the parent element.To place an element in the middle −   Middle Alignment Let us seen an example to implement the align-middle class in Bootstrap 4 −ExampleLive Demo       Bootstrap Example                                   Example       This is demo text       Demo Baseline       Top Alignment       Middle Alignment       Bottom Alignment    

Use the .align-items-*-baseline in Bootstrap 4 to align single rows of items at the baseline on different screens.On different screen sizes, align single rows of items as shown below −Align at the baseline on Small Screen Size   Item 1   Item 2   Item 3   Item 4 Align at the baseline on Medium Screen Size   Item 1   Item 2   Item 3   Item 4 Align at the baseline on Large Screen Size   Item 1   Item 2   Item 3   Item 4 You can try to run the following code to align single ... Read More

Use the border-top-0 class to remove the top border from an element.Set the class as if we add any other class to an element −   Top border is missing Above, I have taken as our element. Another class “mystyle” is also added that styles our div −.mystyle {   width: 350px;   height: 170px;   margin: 10px; }You can try to run the following code to work with the border-top-0 class in Bootstrap 4 −ExampleLive Demo       Bootstrap Example                             .mystyle {       width: 350px;       height: 170px;       margin: 10px;     }         Rectangle   Top border is missing