JSFiddle - React, Tailwind, and code Playground

HTML

<div>
    <table cellspacing="0" cellpadding="2" style="border-collapse: inherit; width: 100%;">
        <tbody><tr>
            <td valign="top" id="a9caa25c_49865Caption">
                * Business E-mail</td>
            <td valign="top" style="width: 145px;"><input type="text" onkeypress="a9caa25c_handleEnterKey(this, event);" value="" name="a9caa25c_49865" id="a9caa25c_49865" maxlength="100"></td>
            </tr>
            <tr>
                <td valign="top" id="a9caa25c_49866Caption">
                    * First Name</td>
                <td valign="top" style="width: 145px;"><input type="text" onkeypress="a9caa25c_handleEnterKey(this, event);" value="" name="a9caa25c_49866" id="a9caa25c_49866" maxlength="50"></td>
            </tr>
            <tr>
                <td valign="top" id="a9caa25c_49867Caption">
                    * Last Name</td>
                <td valign="top" style="width: 145px;"><input type="text" onkeypress="a9caa25c_handleEnterKey(this, event);" value="" name="a9caa25c_49867" id="a9caa25c_49867" maxlength="50"></td>
            </tr>
            <tr>
                <td valign="top" id="a9caa25c_49864Caption">
                    * Company Name</td>
                <td valign="top" style="width: 145px;"><input type="text" onkeypress="a9caa25c_handleEnterKey(this, event);" value="" name="a9caa25c_49864" id="a9caa25c_49864" maxlength="50"></td>
            </tr>
            <tr>
                <td valign="top" id="a9caa25c_49863Caption">
                    * Select a City</td>
                <td valign="top" style="width: 145px;"><input type="text" onkeypress="a9caa25c_handleEnterKey(this, event);" value="" name="a9caa25c_49863" id="a9caa25c_49863" maxlength="50"></td>
            </tr>
            <tr>
                <td valign="top" id="a9caa25c_49874_cCaption">
                    * Select a State</td>
                <td valign="top">
                    <select style="width: 45px;" onmousedown="a9caa25c_fixWidth(this,...

CSS

div { width: 360px; position: relative; z-index: 100; border: 1px solid green; }select {  /*position: absolute; z-index: 500; width: 145px*/ }

/*select:hover { border: 10px solid red}
select:focus { border: 10px solid green}
*/

JavaScript

function a9caa25c_getValue(id) {
    var ctl = document.getElementById(id);
    var tagName = ctl.tagName.toLowerCase();
    if (tagName == 'input') {
        var type = ctl.type.toLowerCase();
        if (type == 'checkbox') {
            return a9caa25c_getCheckBoxValue(ctl);
        }
        if (type == 'radio') {
            return a9caa25c_getRadioButtonValue(ctl);
        }
        return a9caa25c_getTextFieldValue(ctl);
    }
    else if (tagName == 'select') {
        return a9caa25c_getComboBoxValue(ctl);
    }
    return '';
}

function a9caa25c_getCheckBoxValue(checkBox) {
    return checkBox.checked ? checkBox.value : '';
}

function a9caa25c_getRadioButtonValue(radioButton) {
    var radioButtons = document.getElementsByName(radioButton.name);
    for (var i = 0; i < radioButtons.length; i++) {
        if (radioButtons[i].checked) {
            return radioButtons[i].value;
        }
    }
    return '';
}

function a9caa25c_getComboBoxValue(comboBox) {
    return comboBox.options[comboBox.selectedIndex].value;
}

function a9caa25c_getTextFieldValue(textField) {
    return a9caa25c_trim(textField.value);
}

function a9caa25c_verifyEmpty(id) {
    if (a9caa25c_isEmpty(id)) {
        a9caa25c_setError(id, 'Please provide a value');
        return true;
    }
    a9caa25c_removeError(id);
    return false;
}

function a9caa25c_isEmpty(id) {
    var value = a9caa25c_getValue(id);
    return (value.length == 0);
}

function a9caa25c_verifyRegExp(id, regExp, errMsg) {
    var value = a9caa25c_getValue(id);
    if (value != '') {
        try {
            var matches = new RegExp(regExp).exec(value);
            if (matches == null || matches[0] != value) {
                a9caa25c_setError(id, errMsg);
                return false;
            }
        }
        catch (e) {}
        a9caa25c_removeError(id);
    }
    return true;
}

function a9caa25c_removeError(id) {
    var element = document.getElementById(id);
    element.setAttribute('errmsg',...