![tag-image](/themes/custom/mycode/images/Frame_3.webp)
Bootstrap 3 is a version of the Bootstrap front-end framework that was released in 2013. It is a collection of CSS and HTML conventions used for the styling and layout of web pages. It is designed to be responsive, meaning that the layout of a webpage built with Bootstrap will automatically adjust to look good on any device, whether it be a desktop computer, a tablet, or a smartphone.