JSFiddle - React, Tailwind, and code Playground

HTML

<table class="layout_geral_fixo">
            <!-- Menu topo -->

            <tr>
                <td>
asasdasdasdasdasdasdasdasdasdasdasdasdasdasd asdasdasdasdasdasdasd

                </td>
            </tr>

            <!-- FIM Menu topo -->
        </table>

CSS

.layout_geral_fixo {
    position: fixed;
    width: 100%;
    border-spacing: 0;
    border-collapse: collapse;
    background: #484848;
    z-index: 6;
    height: 37px;
}