JSFiddle - React, Tailwind, and code Playground

HTML

<header>
  <h1>Heading</h1>
  <div class="accent">Accent Text</div>
</header>

CSS

header {
    background-color: #ffd;
    display: flex;
    justify-content: flex-start;
    align-items: baseline;
    margin: 0 1em 0 0;
    height: 100px;                 /*  for this demo  */
}

h1 {
    margin: auto 1em auto 0;
}