/* Hide the header */
#main-header { display:none; }
#page-container {
padding-top:0px !important;
margin-top:-1px !important
}
/* Adjust padding for transparent headers */
.et_transparent_nav #main-content .container {
padding-top: 58px !important;
}To remove the header from a single page (or post), you can paste the code given at the start of the post into per-page “Custom CSS” box, which you’ll find as follows:
Visual Builder – Click on the purple “…” menu button, then on the purple “cog” icon and navigate to “Advanced > Custom CSS” in the Page Settings box that appears.
Backend Builder – Click on the purple “cog” icon and navigate to “Advanced > Custom CSS” in the Page Settings box that appears.
Classic Editor – On the page edit screen, click on the three-lined “hamburger” menu button on the top right of the purple Divi Builder area. Place CSS into the Custom CSS box in the menu that appears.
CSS placed in these boxes will apply only to that particular page.