could you please help me

i am using below code in master page

<div class="container">
        <div class="master navBg">
            <div class="mainWrapper">
                <div class="main">
                    <div class="logo">
                        <a href="/">
                            <img src="/images/logo.png" alt="Micromax - Nothing like Anything"></a>
                            </div>
                    <nav id="smoothmenu1" class="ddsmoothmenu">
         <cms:listmenu runat="server" ID="wM" Path="/%" ClassNames="CMS.MenuItem" MaxRelativeLevel="2"
                    WhereCondition="MenuItemGroup <> 'footer' OR MenuItemGroup IS NULL" RenderCssClasses="True"
                    ItemIdPrefix="tm" HideControlForZeroRows="False" ZeroRowsText="There are no menu pages."
                    CacheDependencies="##DEFAULT##" />
        </nav>
                    <div class="socialLinks">
                        <ul>                         
                        </ul>
                        <form id="formSearch" action="/search.aspx" method="post">
                        <input type="text" name="inputSearch" class="inputSearch" value="Search" onfocus="if(this.value == 'Search') { this.value=''; }"
                            onblur="if (this.value == '') { this.value='Search'; }">
                        </form>
                    </div>
                </div>
            </div>
        </div>       
    </div>

and using below code in template page

<asp:Content ID="Content1" ContentPlaceHolderID="plcMain" Runat="Server">  

<cms:CMSPagePlaceholder ID="plcLeft" runat="server"> 

<LayoutTemplate>
   
<cms:CMSEditableRegion runat="server" ID="WC" RegionTitle="Content" RegionType="HtmlEditor"  HtmlAreaToolbarLocation="In"   />

<cms:CMSWebPartZone ID="zF" ZoneTitle="Footer Content" runat="server" />

</LayoutTemplate>

</cms:CMSPagePlaceholder>

</asp:Content>

Issue is that my header overlap the editable region that's why i am unable to edit the content.
if i remove the header then everything becomes fine.
but i have to use header and i can't add space between header and editable region otherwise that will reflect on page