#### Description:

If input fields are not filled out or not filled out according to the specified requirements, the user will receive a corresponding notification via an error message.

#### Usage:

For each input field, error messages are defined, which will be displayed to the user in case of missing or incorrect entries.

#### Behavior:

The error message will be displayed to the user when

- a form is submitted and required fields are not filled out.
- an input field is left and the entry does not meet the specified requirements.

Error Messages: Aim to provide a solution in the content.
For example, instead of "Name is a required field" use "Please enter your name."
