JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<div class="container">
  <fieldset class="fieldset-border">
    <legend class="legend-border">Teste</legend>
  </fieldset>
</div>

CSS

.fieldset-border {
            border: 1px groove #ddd !important;
            padding: 0 1.4em 1.4em 1.4em !important;
            margin: 0 0 2.5em 0 !important;
            -webkit-box-shadow: 0px 0px 0px 0px #000;
            box-shadow: 0px 0px 0px 0px #000;
        }

        .fieldset-border .legend-border {
            font-size: 1.2em !important;
            text-align: left !important;
            width: auto;
            padding: 10 10px;
            border-bottom: none;
        }