An element of the graphical user interface (GUI) known as a slide-in panel widget is frequently used in web and mobile applications to show consumers marketing messages, alerts, notifications, or other forms of material. The widget, as its name suggests, often slides in from the edge of the screen and momentarily covers the primary content.
This kind of widget is frequently used to draw users' attention and present crucial information or calls to action without interfering with their browsing experience. To make the slide-in panel widget more visually appealing and engaging, many design elements can be included, such as colors, icons, fonts, and animations. Both marketers and developers favor it because of its adaptability and simplicity of use.