Bad value “0” for attribute “step” on element “input”: Zero is not a valid positive floating point number.

The step attribute is a number that specifies the granularity that the value must adhere to.

It sets the stepping interval when clicking up and down spinner buttons, moving a slider left and right on a range, and validating the different date types.

When used, it must be greater than zero.

Example:

<form>
<!-- Valid values include 1.3, 3.3, 5.3, 7.3, 9.3, 11.3, and so on -->

  <input id="myNumber" name="myNumber" type="number" step="2" min="1.3" />
</form>