What is a placeholder in coding?
Placeholders in sample code and commands represent values that the reader must replace when they use the sample input. Placeholders in example output can also represent other values that vary. In general, a placeholder has a descriptive name as a default value.
How to style placeholder text in textarea?
Use the ::placeholder pseudo-element to style your placeholder text in an <input> or <textarea> form element. Most modern browsers support this, but for older browsers, vendor prefixes will be required.