Advance Table Code

Firstname	Lastname	Firstname	Lastname
Peter 1	Griffin	Peter 1.1	Peter 1.2
	Griffin Peter		Griffin
Peter 2	Griffin	Peter	Griffin
Peter 3	Griffin	Lois	Griffin

CSS

.page table {
  background: ;
  width: 100%;
  height: 100%;
  border: 2px;
  border-style: solid;
  border-color: Blue;
  border-collapse: collapse;
}
  
.page table th {
  background: #007874;
  color: #fff;
  width: ;
  height: 30px;
  font-size: 20px;
  font-family:times;
  text-align: center;
  vertical-align: middle;
  font-weight: bold;
  border: 1px;
  border-style: solid;
  border-color: Red;
}
  
.page table td {
  color: #000;
  width: ;
  height: 30px;
  font-size: 20px;
  font-family:times;
  text-align: center;
  vertical-align: middle;
  border: 1px;
  border-style: solid;
  border-color: green;
}

.page table td:hover{
  border: 2px solid Red;
}
    

HTML

<div class="page">
<table>
  <tr>
    <th>Firstname</th>
    <th>Lastname</th>
    <th>Firstname</th>
    <th>Lastname</th>
  </tr>
  
  <tr>
    <td rowspan="2">Peter</td>
    <td>Griffin</td>
    <td>Griffin</td>
    <td>Griffin</td>
  </tr>
  
  <tr>
    <td colspan="2">Peter</td>
    <td>Griffin</td>
  </tr>
  
  <tr>
    <td>Griffin</td>
    <td>Griffin</td>
    <td>Griffin</td>
    <td>Griffin</td>
  </tr>
  
  <tr>
    <td>Griffin</td>
    <td>Griffin</td>
    <td>Griffin</td>
    <td>Griffin</td>
  </tr>
  
    

JAVASCRIPT