JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr align="right">
        <td style="font-size: 11px;"><b>Item 1 - Descontos:</b>

        </td>
        <td>
            <input type="text" name="Desconto11" value="30" class="inputs" size="2" placeholder="%">
        </td>
        <td>
            <input type="text" name="Desconto12" value="5" class="inputs" size="2" placeholder="%">
        </td>
        <td>
            <input type="text" name="Desconto13" value="5" class="inputs" size="2" placeholder="%">
        </td>
        <td>
            <input type="text" name="Desconto14" value="" class="inputs" size="2" placeholder="%">
        </td>
        <td>
            <input type="text" name="Desconto15" value="" class="inputs" size="2" placeholder="%">
        </td>
    </tr>
    <br>
    <tr align="right">
        <td style="font-size: 11px;"><b>Item 2 - Descontos:</b>

        </td>
        <td>
            <input type="text" name="Desconto21" value="50" class="inputs" size="2" placeholder="%">
        </td>
        <td>
            <input type="text" name="Desconto22" value="5" class="inputs" size="2" placeholder="%">
        </td>
        <td>
            <input type="text" name="Desconto23" value="5" class="inputs" size="2" placeholder="%">
        </td>
        <td>
            <input type="text" name="Desconto24" value="" class="inputs" size="2" placeholder="%">
        </td>
        <td>
            <input type="text" name="Desconto25" value="" class="inputs" size="2" placeholder="%">
        </td>
    </tr>
</table>

CSS

table {
    border-collapse: collapse;
}
.not_valid {
    border:1px solid red;
}

JavaScript

var regras = [30, 5, 5, 3, 2];

function validar() {
    var linhasFalhadas = $('table tr').each(function () {
        var inputsNaoValidados = $(this).find('input').filter(function (i) {
            var value = parseInt(this.value, 10) || 0;
            return value > regras[i];
        });
        if (inputsNaoValidados.length) $(this).addClass('not_valid');
        else $(this).removeClass('not_valid');;
    });
}
validar();