View an age in years, months, and days after submitting a valid date through the form
Receive validation errors if:
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Any field is empty when the form is submitted
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The day number is not between 1-31
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The month number is not between 1-12
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The year is in the future
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The date is invalid, e.g. 31/04/1991 (there are 30 days in April)
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View the optimal layout for the interface depending on their device's screen size
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See hover and focus states for all interactive elements on the page
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Bonus: See the age numbers animate to their final number when the form is submitted