Need help to custumize title header

[Pravi (PK)]

Thanks for the replay. When I added the css, every thing worked fine, except the box shadow. The box shadow went missing. So i made some modification but still the same, no box shadow for header. Need some help over here, @Stranik
see my modified css:

  .d-header {
            padding: 0;
            height: 0.01em;
            background-color: #000;
            box-shadow: 0 2px 4px -1px rgba(0,0,0,0.25);
        }
  .d-header .wrap {
            background-color: #fff;
        }