<apex:page StandardController="Account">
  <!-- Begin Default Content REMOVE THIS -->
  <h1>Congratulations</h1>
<apex:form >
        <apex:pageBlock title="Accountt" mode="edit">

            <apex:pageBlockButtons >
                <apex:commandButton action="{!save}" value="Save"/>
            </apex:pageBlockButtons>

              <apex:pageBlockSection title="My Account details" columns="2">
                    <apex:inputField value="{!account.name}"/>
                    <apex:inputField value="{!account.site}"/>
                    <apex:inputField value="{!account.type}"/>
                    <apex:inputField value="{!account.accountNumber}"/>
                    <apex:inputField value="{!account.Phone}"/>
            </apex:pageBlockSection>
            <apex:pageBlockSection title="Contacts" columns="1">
                <apex:repeat var="Contacts" value="{!Account.Contacts}">
                    <apex:inputField value="{!Contacts.firstName}"/>
                    <apex:inputField value="{!Contacts.lastName}"/>
                    <apex:inputField value="{!Contacts.Email}"/>
                    <apex:inputField value="{!Contacts.Phone}"/>
                    <apex:inputField value="{!Contacts.title}"/>
                </apex:repeat>
            </apex:pageBlockSection>

        </apex:pageBlock>
    </apex:form>
  <!-- End Default Content REMOVE THIS -->
</apex:page>