JSFiddle - React, Tailwind, and code Playground
HTML
<script src="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.js"></script>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css">
<ul class="ui-grid-d">
<li class="ui-block-a"><a id="MostrarDetallePedido" class="ui-btn ui-btn-up-a" disabled="disabled" href="/Documentos/Docs/DocsDetalle?StrIdDocumento=01500___00000000000000041" data-role="button" data-theme="a" data-ajax="false"><span aria-hidden="true" class="ui-btn-inner"><span class="ui-btn-text">Detalle</span></span></a></li>
<li class="ui-block-b"><a id="ItemCondiciones" class="ui-state-disabled ui-btn ui-btn-up-b" disabled="disabled" href="/Documentos/Docs/DocsDetalle?StrIdDocumento=01500___00000000000000041" data-role="button" data-theme="b" data-ajax="false"><span aria-hidden="true" class="ui-btn-inner"><span class="ui-btn-text">Condiciones</span></span></a></li>
<li class="ui-block-c"><a id="ItemEliminar" class="ui-state-disabled ui-btn ui-btn-up-c" disabled="disabled" href="/Documentos/Docs/DocsDetalle?StrIdDocumento=01500___00000000000000041" data-role="button" data-theme="c" data-ajax="false"><span aria-hidden="true" class="ui-btn-inner"><span class="ui-btn-text">Eliminar</span></span></a></li>
<li class="ui-block-d"><a id="ItemAdiciones" class="ui-state-disabled ui-btn ui-btn-up-d" disabled="disabled" href="/Documentos/Docs/DocsDetalle?StrIdDocumento=01500___00000000000000041" data-role="button" data-theme="d" data-ajax="false"><span aria-hidden="true" class="ui-btn-inner"><span class="ui-btn-text">Adiciones</span></span></a></li>
<li class="ui-block-e"><a id="ItemComponentes" class="ui-state-disabled ui-btn ui-btn-up-e" disabled="disabled" href="/Documentos/Docs/DocsDetalle?StrIdDocumento=01500___00000000000000041" data-role="button" data-theme="e" data-ajax="false"><span aria-hidden="true" class="ui-btn-inner"><span class="ui-btn-text">Componentes</span></span></a></li>
</ul>
JavaScript
$('#ItemEliminar').addClass('ui-disabled');