JSFiddle - React, Tailwind, and code Playground

HTML

<div id='sk_head'>
  <div class='h_title'>
    <h3>Title</h3>
    <h4>More less important title title</h4>
  </div>

  <div class="h_instr">
    <p><a href="{% url 'PGP_instrukcija' %}">Link to user guide</a></p>
  </div>
</div>


<div id="sk_form">
  <form action="" method="post">
    <div id='sk_body'>
      <fieldset id="skaiciuokle">
        <table class="data_entry">
          /* table with form for entry data */
        </table>
      </fieldset>
    </div>
  </form>
</div>

CSS

#sk_head {
  display:inline-block;
  width:100%;
}

.h_title {
  float:left;
}

.h_instr {
  float:right;
}

#sk_form {
  display:block;
}