JSFiddle - React, Tailwind, and code Playground

HTML

<div id="outerContainer" class="outerContainer">
    <table class="rowContainer" style="width: 100%;">
        <tbody>
            <tr>
                <td style="background:red">
                    <!-- red background to show the padding -->
                    
                    <!-- harmless wrapper just for demo to show non-padding area -->
                    <div id="wrapperJustForDemo" style="background:#ccc">
                        <label class=
                        "formInputLabel">Firma</label>
                        <div class="inputContainer"><input type="text" name="company" id="company"
                            value="" class="formInputTextField" style="width: 100%;" /></div>
                    </div>
                    
                </td>
            </tr>
        </tbody>
    </table>
</div>

CSS

table.rowContainer {
    margin: 5px 0px;
}
table.rowContainer  td {
    vertical-align: top;
    padding-right: 10px;
}

/* */

label {
    font-size: 11px;
    color: #083772;
    
    cursor: pointer;
}

input.formInputTextField, input.formInputDateField, 
input.formInputNumberField, textarea.formInputTextArea,
input.formInputPasswordField, input.formInputEMailField, input.formInputURLField,
select.formInputSingleSelectList, select.formInputDoubleSelectList {
    border: 1px solid #7F9DB9;
    padding: 2px 2px;
    
    font-family: Arial;
    font-size: 11px;
    color: #204467;
    
    vertical-align: top;
}

.inputContainer {
    background: #fff;
    padding: 3px 3px;
    border: 1px solid #a9a9a9
}
.inputContainer input {
    width: 100%;
    margin: 0; padding: 0; border: 0;
    display: block
}