Hello All,

I am trying to extend the width of a visualforce page related list in the lightning interface, but I am unable to figure out how.
The visualforce page related list looks like this in the lightnin interface-



The related list does not extend completely in the lightning interface but it works correctly in the classic interface.

Here is my visualforce code-

<apex:page standardController="Account" extensions="AccountRelatedListController" sidebar="true" showHeader="false"   lightningstylesheets="true">    
    <apex:form >                
        <apex:pageblock id="AccountList" tabStyle="account">  
            <div style="margin-left: 30%;"><apex:commandLink value="New Account" action="{!newAccount}" target="_parent" styleClass="btn" style="text-decoration:none;padding:4px;"/></div>
            <br/>
            <apex:pageBlockTable value="{!accounts}" var="acct" columns="4"  rendered="{!NOT(ISNULL(accounts))}">                
                <apex:column HeaderValue="Action" >
                    <apex:commandLink value="Edit" style="color:#015ba7;" action="{!editAccount}" target="_parent" ><apex:param value="{!acct.id}" name="AccountId"/>
                    </apex:commandLink>
                    &nbsp;|&nbsp;
                    <apex:commandLink value="Del" onclick="return confirm('Are you sure?')" style="color:#015ba7;" action="{!deleteAccount}" target="_parent"><apex:param value="{!acct.id}" name="AccountId"/>
                    </apex:commandLink>
                </apex:column>
                <apex:column headerValue="Account Name"><apex:outputLink value="/{!acct.id}" target="_blank">{!acct.Name}</apex:outputLink> </apex:column>              
                <apex:column value="{!acct.Industry}"/>
                <apex:column value="{!acct.Phone}"/>
                <apex:outputLabel value="No records to display" rendered="{!(ISNULL(accounts))}" styleClass="noRowsHeader"></apex:outputLabel>
            </apex:pageBlockTable>            
        </apex:pageblock>
    </apex:form>  
</apex:page>