Use this in your visualforce page. Don't forget mark as answer if it works for you. :)

<apex:page standardcontroller="Lead" tabstyle="Lead">
 
 <apex:form >
 
 <apex:sectionheader title="Lead Edit" subtitle="{!if(Lead.Id==null,'New Lead',Lead.Name)}"></apex:sectionheader>
 
 <apex:pageblock mode="edit" id="leadPB" title="Lead Edit">
 
 <apex:pageblockbuttons >
 <apex:commandbutton action="{!save}" value="Save"></apex:commandbutton>
 <!-- If you wish to implement Save & New functionality you will have to write an Apex Extension with your own Save & New Method -->
 <apex:commandbutton action="{!cancel}" value="Cancel"></apex:commandbutton>
 </apex:pageblockbuttons>
 
 <apex:pagemessages ></apex:pagemessages> <!-- displays all message generated by the component -->
 
 <apex:pageblocksection id="LeadInformationPBS" title="Lead Information">
 <!-- Make Owner field editable in system or else you won't be able to edit the Owner -->
 <apex:inputfield value="{!Lead.OwnerId}"></apex:inputfield>
 <apex:inputfield value="{!Lead.Phone}"></apex:inputfield>
 
 <!-- Since we need to group two input fields together we need a pageBlockSectionItem with an Output panel.  We also needed to create a label so we know what field we are entering in -->
 <apex:pageblocksectionitem >
 <apex:outputlabel value="{!$ObjectType.Lead.Fields.FirstName.label}"></apex:outputlabel>
 <apex:outputpanel >
 <apex:inputfield value="{!Lead.Salutation}"></apex:inputfield>
 <apex:inputfield value="{!Lead.FirstName}"></apex:inputfield>
 </apex:outputpanel>
 </apex:pageblocksectionitem>
 <apex:inputfield value="{!Lead.MobilePhone}"></apex:inputfield>
 
 <apex:inputfield value="{!Lead.LastName}"></apex:inputfield>
 <apex:inputfield value="{!Lead.Fax}"></apex:inputfield>
 
 <apex:inputField value="{!Lead.Company}" />
 <apex:inputfield value="{!Lead.Email}" required="true"></apex:inputfield>
 
 <apex:inputfield value="{!Lead.Title}"></apex:inputfield>
 <apex:inputfield value="{!Lead.Website}"></apex:inputfield>
 
 <apex:inputfield value="{!Lead.Leadsource}"></apex:inputfield>
 <apex:inputfield value="{!Lead.Status}"></apex:inputfield>
 
 <!-- <apex:inputField value="{!Lead.Campaign}" />
 Campaign field is not able to be used unless you write your own custom class/method to create a campaign member
 Post explaining this issue: http://boards.developerforce.com/t5/Apex-Code-Development/Cannot-Access-to-Campaign-Field-from-Lead-Object/td-p/161715
 -->
 <apex:inputfield value="{!Lead.Rating}"></apex:inputfield>
 
 <apex:inputfield value="{!Lead.Industry}"></apex:inputfield>
 <apex:inputfield value="{!Lead.NumberOfEmployees}"></apex:inputfield>
 </apex:pageblocksection>
 
 <apex:pageblocksection id="AddressInformationPBS" title="Address Information">
 <apex:inputfield value="{!Lead.Street}"></apex:inputfield>
 <apex:outputtext value=""></apex:outputtext>
 
 <apex:inputfield value="{!Lead.City}"></apex:inputfield>
 <apex:outputtext value=""></apex:outputtext>
 
 <apex:inputfield value="{!Lead.State}"></apex:inputfield>
 <apex:outputtext value=""></apex:outputtext>
 
 <apex:inputfield value="{!Lead.PostalCode}"></apex:inputfield>
 <apex:outputtext value=""></apex:outputtext>
 
 <apex:inputfield value="{!Lead.Country}"></apex:inputfield>
 <apex:outputtext value=""></apex:outputtext> <!-- Don't Really need to implement this extra space, but it's not bad practice -->
 </apex:pageblocksection>
 
 <apex:pageblocksection id="AdditionalInformationPBS" title="Additional Information">
 <apex:inputfield value="{!Lead.ProductInterest__c}"></apex:inputfield>
 <apex:inputfield value="{!Lead.CurrentGenerators__c}"></apex:inputfield>
 
 <apex:inputfield value="{!Lead.SICCode__c}"></apex:inputfield>
 <apex:inputfield value="{!Lead.Primary__c}"></apex:inputfield>
 
 <apex:inputfield value="{!Lead.NumberofLocations__c}"></apex:inputfield>
 </apex:pageblocksection>
 
 <apex:pageblocksection id="DescriptionInformationPBS" title="DescriptionInformation">
 <apex:inputfield value="{!Lead.Description}"></apex:inputfield>
 </apex:pageblocksection>
 
 <apex:pageblocksection id="OptionPBS" title="Lead Information">
 <!-- If you want to have a checkbox to implement whether to use Active Assignment rules you will need to create your own using a custom Apex Extension and method -->
 Here we can place any extra fields or lead options we wish...
 </apex:pageblocksection>
 
 </apex:pageblock>
 
 </apex:form>
 
</apex:page>