Home › Forums › Support › Create 1px thin grey horizontal line under header (menu) This topic has 6 replies, 2 voices, and was last updated 4 years, 7 months ago by Leo. Viewing 7 posts - 1 through 7 (of 7 total) Author Posts August 27, 2021 at 6:15 am #1910067 MMS Hi, Can you please tell me how I can add a 1px thin light grey line under the header i.e. before the body content? August 27, 2021 at 10:13 am #1910283 LeoStaff Customer Support Hi Simon, Try this CSS: .site-header { border-bottom: 1px solid #000; } Adding CSS: https://docs.generatepress.com/article/adding-css/ If this doesn’t work, please link me to the page in question. Thanks! August 27, 2021 at 2:22 pm #1910496 MMS Hi, Unfortunately, that CSS code doesn’t seem to work? See makemesustainable.com August 27, 2021 at 2:25 pm #1910497 LeoStaff Customer Support That’s likely because you are missing a closing bracket } for your previous CSS: https://www.screencast.com/t/CZRgOYoNn August 28, 2021 at 12:46 am #1910685 MMS Thanks, That’s fixed. But the line only seems to appear on Desktop version, not mobile? August 28, 2021 at 5:16 am #1910808 MMS Resolved by adding the following:- .site-header, #mobile-header August 28, 2021 at 9:44 am #1911124 LeoStaff Customer Support Glad to hear 🙂 Author Posts Viewing 7 posts - 1 through 7 (of 7 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In