HTML の枠線のない表

<table>
<thead>
<th>S.No</th>
<th>Name</th>
<th>Date of Birth</th>
<th>Profile</th>
<th>Salary</th>
</thead>
<tbody>
<tr>
<td>1</td><td>Jeff Smith</td>
<td>35</td>
<td>Assistant Manager</td>
<td>120,000</td>
</tr>
<tr>
<td>2</td>
<td>Maria Garcia</td>
<td>42</td>
<td>Department Head</td>
<td>85,000</td>
</tr>
<tr>
<td>3</td>
<td>David Rodriguez</td>
<td>37</td>
<td>Senior Sales Executive</td>
<td>45,000</td>
</tr>
<tr>
<td>4</td>
<td>Eyon Shih</td>
<td>32</td>
<td>Sales Executive</td>
<td>35,000</td>
</tr>
</tbody>
</table>

table{
border : 1px solid #000000;
}

<table width="80%" cellspacing="0" cellpadding="5">
<thead>
<th>Description</th>
<th>Electricals & Electronics</th>
<th>Computers & Accessories</th>
</thead>
<tbody>
<tr>
<td class="text">Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.
</td>
<td>
<table width="400" cellspacing="0">
<tbody>
<tr>
<td>Television</td>
<td>Washing Machine</td>
<td>Fan</td>
</tr>
<tr>
<td>Induction</td>
<td>Room Heater</td>
<td>Iron</td>
</tr>
<tr>
<td>Inverter Kits</td>
<td>Circuits</td>
<td>CPU</td>
</tr>
<tr>
<td>Keyboard</td>
<td>Mouse</td>
<td>Scanner</td>
</tr>
</tbody>
</table>
</td>
<td>
<table width="250" cellspacing="0">
<tbody>
<tr>
<td>Laptop</td>
<td>Monitor</td>
<td>CPU</td>
</tr>
<tr>
<td>Keyboard</td>
<td>Mouse</td>
<td>Scanner</td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>

<style type="text/css">
table th{
width: 200px;
text-align: center;
}
td.text{
text-align: justify;
padding: 5px;
}
table table, table table td{
border: 1px solid #000;
}
</style>

<table width="50%" cellspacing="0">
<thead>
<th width="100">S.No.</th>
<th width="150">Country Code</th>
<th width="200">Country</th>
<th width="150">Phone Code</th>
</thead>
<tbody>
<tr>
<td>1</td>
<td>AW</td>
<td>Aruba</td>
<td>297</td>
</tr>
<tr>
<td>2</td>
<td>AU</td>
<td>Australia</td>
<td>61</td>
</tr>
<tr>
<td>3</td>
<td>AT</td>
<td>Austria</td>
<td>43</td>
</tr>
<tr>
<td>4</td>
<td>AZ</td>
<td>Azerbaijan</td>
<td>994</td>
</tr>
<tr>
<td>5</td>
<td>BS</td>
<td>Bahamas</td>
<td>1241</td>
</tr>
<tr>
<td>6</td>
<td>BH</td>
<td>Bahrain</td>
<td>973</td>
</tr>
</tbody>
</table>

<style type="text/css">
table th, table td{
text-align: center;
}
tbody tr:nth-child(even) {
background: #e8e7e1;
}
</style>