JSFiddle - React, Tailwind, and code Playground

HTML

<header>
    <h1>Title</h1><nav><a>A Link</a><a>Another Link</a><a>A Third Link</a></nav>
</header>

CSS

header {
    background: #ccc; 
    text-align: justify; 
}
 header:after{
    content: '';
    display: inline-block;
    width: 100%;
    height: 0;
    font-size:0;
    line-height:0;
}

h1 {
    display: inline-block;
    margin-top: 0.321em;
}

nav {
    display: inline-block;
    vertical-align: baseline;
}