<input type="submit" value="Submit">
A submit input creates a button which submits the form it is inside when clicked.
You can also use the <button> element if you require a submit button that can be more easily styled or contain other elements:
<button type="submit">
<img src="/?originalUrl=https%3A%2F%2Friptutorial.com%2F%26quot%3Bsubmit-icon.jpg%26quot%3B%2520%2F%26gt%3B%2520Submit%26lt%3B%2Fbutton%26gt%3B%253C%2Fcode">