CSS Responsive Table

<!DOCTYPE html>
<html>

<head>
    <link rel="stylesheet" href="style.css">
</head>

<body>
    <div class="table-users">
   <div class="header">Users</div>
   
   <table cellspacing="0">
      <tr>
         <th>Foto</th>
         <th>Nombre</th>
         <th>Correo</th>
         <th>Teléfono</th>
         <th width="230">Comentarios</th>
      </tr>

      <tr>
         <td><img src="http://lorempixel.com/100/100/people/1" alt="" /></td>
         <td>Jane Doe</td>
         <td>jane.doe@foo.com</td>
         <td>01 800 2000</td>
         <td>Lorem ipsum dolor sit amet, consectetur adipisicing elit. </td>
      </tr>

      <tr>
         <td><img src="http://lorempixel.com/100/100/sports/2" alt="" /></td>
         <td>John Doe</td>
         <td>john.doe@foo.com</td>
         <td>01 800 2000</td>
         <td>Blanditiis, aliquid numquam iure voluptatibus ut maiores explicabo ducimus neque, nesciunt rerum perferendis, inventore.</td>
      </tr>
   </table>
</div>
</body>

</html>

// Code goes here

* { box-sizing: border-box; }

body { font-family: sans-serif; }

.header {
    background-color: #ccc;
    color: white;
    font-size: 1.5em;
    padding: 1rem;
    text-align: center;
    text-transform: uppercase;
}

img {
    border-radius: 50%;
    height: 60px;
    width: 60px;
}

.table-users {
    border: 1px solid #ccc;
    max-width: calc(100% - 2em);
    margin: 5em auto;
    width: 800px;
}

table { width: 100%; }

td, th { padding: 10px; }

td {
    text-align: center;
    vertical-align: middle;
}
td:last-child {
    font-size: 0.95em;
    line-height: 1.4;
    text-align: left;
}

th { background-color: #efefef; }

tr:nth-child(2n) { background-color: white; }
tr:nth-child(2n+1) { background-color: #fafafa; }


@media screen and (max-width: 700px) {
    table, tr, td { display: block; }
    
    td:first-child {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        width: 100px;
    }
    td:not(:first-child) {
        clear: both;
        margin-left: 100px;
        padding: 4px 20px 4px 100px;
        position: relative;
        text-align: left;
    }
    td:not(:first-child):before {
        color: #bbb;
        content: '';
        display: block;
        left: 0;
        position: absolute;
    }
    td:nth-child(2):before { content: 'Nombre:'; }
    td:nth-child(3):before { content: 'Correo:'; }
    td:nth-child(4):before { content: 'Teléfono:'; }
    td:nth-child(5):before { content: 'Comentarios:'; }
    
    tr { 
        padding: 10px 0; 
        position: relative; 
    }
    tr:first-child { display: none; }
}

@media screen and (max-width: 500px) {
    .header {
        background-color: transparent;
        color: #888;
        font-size: 2em;
        font-weight: 700;
        padding: 0;
        text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
    }
    
    img {
        height: 100px;
        margin: 0.5rem 0;
        width: 100px;
    }
    
    td:first-child,
    td:not(:first-child) {
        padding: 5px 1em;
        width: 100%;
    }
    
    td:first-child {
        background-color: #efefef;
        border-bottom: 1px solid #ddd;
        position: relative;
        top: 0;
        transform: translateY(0);
    }
    
    td:not(:first-child) { 
        margin: 0; 
    }
    td:not(:first-child):before {
        display: block;
        font-size: .8em;
        padding-top: 0.3em;
        position: relative;
    }
    
    td:last-child { padding-bottom: 1rem; }
    
    tr {
        background-color: white !important;
        border: 1px solid #ccc;
        margin: 0.5rem 0;
        padding: 0;
    }
    
    .table-users {
        border: none;
        box-shadow: none;
    }
}