JSFiddle - React, Tailwind, and code Playground

HTML

<fieldset class="Fieldset">
    <legend class="Legend" id="Legend">Add</legend>
</fieldset>

CSS

.Fieldset
{
    border: 1px solid #CCC;
    border-radius: 5px;
    padding: 10px;
}

.Legend
{
    border: medium none;
    margin-left: 40%;
    padding: 0 10px;
    position: relative;
    text-align: center;
    width: auto;
    color: #3C6EAC;
    font-size: 18px;
    font-weight: bold;
}