I am creating a form in Visualforce. Since my form is a bit long, it is hard for users to remember the error message at the top and revise it. On top of the error message, I want to create a validation when users typing in their information.
For example, there are 2 field, users name and email. Users cannot leave the name field blank, if so, I want to show a message of "This field is required to fill in" beside the field. And for email field, I want to have another message to remind users to insert a valid email.
Is there anyway in visualforce to do so? Thanks for your help.

I keep getting the following error when trying to check my challenge on "Routing Records with Approvals" on Admin Trail - Intermediate.

Challenge not yet complete... here's what's wrong: 
The process did not set the correct Type value on submitting for approval



I'm not sure why it isn't approving.  Please help!