Required Error Message in Visualforce Page

Question

Hi folks,
Can anyone tell me how to show the custom error message(red color) in visualforce after disabling the show header and standard stylesheet?

Below is my VFP for getting Custom Error Message

<apex:page standardController="Contact" standardStylesheets="false" showHeader="false"  >
<apex:pageBlock >   
    <apex:form >   
        <apex:pageMessages ></apex:pageMessages>   
        <apex:inputField value="{!contact.lastname}" html-placeholder="Enter Your Last Name"/>   
        <apex:commandButton action="{!save}" value="Submit"/>         
    </apex:form>     
</apex:pageBlock>   
</apex:page>  

But It gives

I want to display error message in red color For that What I've to do?

Thanks in advance
Karthick

Updated Code:

Answer 1

http://www.sfdcpoint.com/salesforce/show-error-message-visualforce-page/

I hope this will help you for sure

Answer 2

You can still use the following tag I believe

<apex:messages/>

Answer 3

set strandardStylesheets to true or remove it. that will give you desired result.

<apex:page standardController="Contact" standardStylesheets="true" showHeader="false"  >