<!DOCTYPE html> <html> <body> <form> Required: <input type="text" name="name" required><br> Email : <input type="email" name="email"><br> URL : <input type="url" name="email"><br> Number(18-99): <input type="number" size="6" name="age" min="18" max="99"><br> Pattern(MM/DD/YYYY): <input type="text" pattern="\d{1,2}/\d{1,2}/\d{4}"><br> Length(10-20): <input minlength="10" maxlength="20"><br> Length(10-20): <textarea required minlength="10" maxlength="20"></textarea><br> Step(3.11)<input type="number" min="0" step="3.11"><br> Required Select: <select required> <option></option> <option value="0">A</option> <option value="1">B</option> <option value="2">C</option> </select><br> Required Radio: <input type="radio" name="group1" value="1" required>1 <input type="radio" name="group1" value="2">2 <input type="radio" name="group1" value="3">3<br> Required Checkbox: <input type="checkbox" name="group2" value="1" required>1 <input type="checkbox" name="group2" value="2">2 <input type="checkbox" name="group2" value="3">3<br> Required File: <input type="file" required><br> <input type="submit"> </form> </body> </html>