How can I move my navigation menu to one line?

Hi @Klmp82 ,

You can follow the instruction below:

  1. Go to Online Store->Theme->Edit code
  2. Asset->/base.css->paste below code at the bottom of the file:
@media (min-width: 750px){
  .header__inline-menu{
    display: flex;
    margin-left: 10px !important;;
  }
  .list-menu--inline{
    flex-wrap: nowrap;
    align-items: flex-start;
    justify-content: flex-start;
  }
  .list-menu--inline *{
    font-size: 10px !important;
  }
  .list-menu--inline li > a,
  .list-menu--inline li summary{
    padding-left: 3px;
    padding-right: 3px !important;
    margin-right: 10px !important;
  }
}

If you feel like my answer is helpful, please mark it as a SOLUTION. Let me know if you have any further questions.

Best regards.