<button class="btn btn-primary">Click Me!</button>
<form> <input type="text" placeholder="Your Name" class="form-control"> <button type="submit" class="btn btn-success mt-2">Submit</button> </form>
<table class="table"> <thead> <tr><th>Name</th><th>Age</th></tr> </thead> <tbody> <tr><td>John</td><td>30</td></tr> </tbody> </table>