JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="container">
  <li class="child">One</li>
  <li class="child">Three</li>
  <li class="child">Three</li>
  <div class="non-flex">
   I'm not a flex item
  </div>
</ul>

CSS

.container{
  display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
    -ms-flex-direction: row;
    flex-direction: row;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    position: relative;
        max-width: 1080px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: content-box;
}

.child{
      display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: horizontal;
    -webkit-box-direction: normal;
    -ms-flex-direction: row;
    flex-direction: row;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
    position: relative;
    min-width: 120px;
}
.non-flex {
  margin-left: auto;
}