In Bootstrap, wells are used to add a rounded border around an element with a gray background color and some padding. It is like a container that displays the content.
The class .well is used with <div> element to add well.
Bootstrap Wells Size
By Default, wells size is medium but you can change the size of the well according to your need. The .well-sm class is used for small wells and .well-lg class is used for large wells.
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