When a prospect clicks a booking link from our email signature, they are prompted to fill out a few forms fields. If they attempt to submit without filling in the required text fields, they turn red and display an error message.However, drop-down fields act differently and are a bit visually confusing. For one, they have a check-mark graphic next to it before any value is entered, and if I try submitting without filling it out I don't get an error message or red styling like I do for other fields.Requested solutions:1) Add error message and red styling if left blank (like other fields)2) Grey-out the default value (like other fields)3) Remove check-mark until a value is selected