### Basic Collapse By default, any number of panels can be expanded at a time. The first panel is expanded in this example. ```jsx live () => { const { Panel } = Collapse; const callback = (key) => { console.log(key); } const text = ` A dog is a type of domesticated animal. Known for its loyalty and faithfulness, it can be found as a welcome guest in many households across the world. `; return (

{text}

{text}

{text}

 ); } ```