How can I move my navigation menu to one line?

Store Design
3

@Klmp82 ,

  1. In your Shopify Admin go to: online store > themes > actions > edit code
  2. Find Asset > base.css and paste this 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;
    
    
}
}

You can try this code but, ideally, taking into consideration a good UX (which ultimately is what will generate you sales), you should not use code for this. The menus should be rethought to be as compact as possible.

Kind regards,
Diego