How to add help text or help bubble in Visualforce page?

How to add help text or help bubble in Visualforce page?

Sample Code:

Visualforce page:

<apex:page sidebar="false" Controller="Sample" showHeader="true">
<apex:form >
<apex:pageBlock >
    <apex:pageBlockSection >
        <apex:pageBlockSectionItem helpText="Name of the Account" LabelTitle="Account Name">
            <apex:outputtext >Enter the Account Name</apex:outputtext>
            <apex:inputtext value="{!Name}" />
        </apex:pageBlockSectionItem>       
    </apex:pageBlockSection>
    <apex:pageBlockButtons >
        <apex:commandButton value="Save"/>
    </apex:pageBlockButtons>
</apex:pageBlock>
</apex:form>
</apex:page>

Output: