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CSS

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HTML 

              
                <table class="nestedTable">
  <thead>
    <tr>
      <th class="spacer tinyCol">
        <br>
      </th>
      <th class="smallCol">Qty</th>
      <th class="largeCol">Name</th>
      <th class="xlargeCol">Company</th>
      <th>FedEx #</th>
      <th>Ship Date</th>
      <th class="mediumCol">Tracking #</th>
      <th>Cost</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td class="spacer">
       <i class="showMore fa fa-angle-double-right"></i>
      </td>
      <td data-label='Quantity:'>1</td>
      <td data-label='Name:'>John Doe</td>
      <td data-label='Company:'>
        <br>
      </td>
      <td data-label='FedEx #'>78945</td>
      <td data-label='Ship Date:'>3/20/14</td>
      <td data-label='Tracking #'>5682 2531 1258</td>
      <td data-label='Cost:'>$18.35</td>
    </tr>
    <tr class="display-none hideOnMobile">
      <td class="spacer header">
        <br>
      </td>
      <td class="spacer header">
        <br>
      </td>
      <td class="header">Street</td>
      <td class="header">City</td>
      <td class="header">State</td>
      <td class="header">Zip Code</td>
      <td class="header">Phone #</td>
      <td class="spacer header">
        <br>
      </td>
    </tr>
    <tr class="display-none">
      <td class="spacer" <br></td>
      <td class="spacer">
        <br>
      </td>
      <td data-label='Street:'>528 East 85nd Street</td>
      <td data-label='City:'>New York</td>
      <td data-label='State:'>NY</td>
      <td data-label='Zip Code:'>10022</td>
      <td data-label='Phone #'>(916)258-5566</td>
      <td class="spacer">
        <br>
      </td>
    </tr>
    <tr>
      <td class="spacer">
        <i class="showMore fa fa-angle-double-right"></i>
      </td>
      <td data-label='Quantity:'>4</td>
      <td data-label='Name:'>Ted Bob</td>
      <td data-label='Company:'>Some Company</td>
      <td data-label='FedEx #'>125325</td>
      <td data-label='Ship Date:'>4/13/14</td>
      <td data-label='Tracking #'>5993 7894 4562</td>
      <td data-label='Cost:'>$58.40</td>
    </tr>
    <tr class="display-none hideOnMobile">
      <td class="spacer header">
        <br>
      </td>
      <td class="spacer header">
        <br>
      </td>
      <td class="header">Street</td>
      <td class="header">City</td>
      <td class="header">State</td>
      <td class="header">Zip Code</td>
      <td class="header">Phone #</td>
      <td class="spacer header">
        <br>
      </td>
    </tr>
    <tr class="display-none">
      <td class="spacer">
        <br>
      </td>
      <td class="spacer">
        <br>
      </td>
      <td data-label='Street:'>7898 Company Ave</td>
      <td data-label='City:'>Norwood</td>
      <td data-label='State:'>MA</td>
      <td data-label='Zip Code:'>02062</td>
      <td data-label='Phone #'>(800)123-7894</td>
      <td class="spacer">
        <br>
      </td>
    </tr>
    <tr>
      <td class="spacer">
        <i class="showMore fa fa-angle-double-right"></i>
      </td>
      <td data-label='Quantity:'>17</td>
      <td data-label='Name:'>Jane More</td>
      <td data-label='Company:'>
        ABC llc
      </td>
      <td data-label='FedEx #'>Shipper</td>
      <td data-label='Ship Date:'>1/20/15</td>
      <td data-label='Tracking #'>9882 4568 1258</td>
      <td data-label='Cost:'>$108.35</td>
    </tr>
    <tr class="display-none hideOnMobile">
      <td class="spacer header">
        <br>
      </td>
      <td class="spacer header">
        <br>
      </td>
      <td class="header">Street</td>
      <td class="header">City</td>
      <td class="header">State</td>
      <td class="header">Zip Code</td>
      <td class="header">Phone #</td>
      <td class="spacer header">
        <br>
      </td>
    </tr>
    <tr class="display-none">
      <td class="spacer" <br></td>
      <td class="spacer">
        <br>
      </td>
      <td data-label='Street:'>789 E Street</td>
      <td data-label='City:'>Hollywood</td>
      <td data-label='State:'>CA</td>
      <td data-label='Zip Code:'>17822</td>
      <td data-label='Phone #'>(987)123-5566</td>
      <td class="spacer">
        <br>
      </td>
    </tr>
    <tr>
      <td class="spacer">
        <i class="showMore fa fa-angle-double-right"></i>
      </td>
      <td data-label='Quantity:'>44</td>
      <td data-label='Name:'><br></td>
      <td data-label='Company:'>Company Only</td>
      <td data-label='FedEx #'>456258</td>
      <td data-label='Ship Date:'>3/13/15</td>
      <td data-label='Tracking #'>9999 9454 2222</td>
      <td data-label='Cost:'>$789.40</td>
    </tr>
    <tr class="display-none hideOnMobile">
      <td class="spacer header">
        <br>
      </td>
      <td class="spacer header">
        <br>
      </td>
      <td class="header">Street</td>
      <td class="header">City</td>
      <td class="header">State</td>
      <td class="header">Zip Code</td>
      <td class="header">Phone #</td>
      <td class="spacer header">
        <br>
      </td>
    </tr>
    <tr class="display-none">
      <td class="spacer">
        <br>
      </td>
      <td class="spacer">
        <br>
      </td>
      <td data-label='Street:'>1235 Pear Ave</td>
      <td data-label='City:'>Toko</td>
      <td data-label='State:'>Am</td>
      <td data-label='Zip Code:'>45862</td>
      <td data-label='Phone #'>(800)789-4594</td>
      <td class="spacer">
        <br>
      </td>
    </tr>
    <tr>
      <td class="spacer">
        <i class="showMore fa fa-angle-double-right"></i>
      </td>
      <td data-label='Quantity:'>2</td>
      <td data-label='Name:'>Lisa Jefferson</td>
      <td data-label='Company:'>Long Company Name Test</td>
      <td data-label='FedEx #'>Shipper</td>
      <td data-label='Ship Date:'>
        <span class="pending">...</span>
      </td>
      <td data-label='Tracking #'>
        <span class="pending">Pending</span>
      </td>
      <td data-label='Cost:'>
        <span class="pending">...</span>
      </td>
    </tr>
    <tr class="display-none hideOnMobile">
      <td class="spacer header">
        <br>
      </td>
      <td class="spacer header">
        <br>
      </td>
      <td class="header">Street</td>
      <td class="header">City</td>
      <td class="header">State</td>
      <td class="header">Zip Code</td>
      <td class="header">Phone #</td>
      <td class="spacer header">
        <br>
      </td>
    </tr>
    <tr class="display-none">
      <td class="spacer"></td>
      <td class="spacer"></td>
      <td data-label='Street:'>78945 Street Place, Ste 456</td>
      <td data-label='City:'>Honolulu</td>
      <td data-label='State:'>HI</td>
      <td data-label='Zip Code:'>96819</td>
      <td data-label='Phone #'>(808)456-7851</td>
      <td class="spacer"></td>
    </tr>
  </tbody>
</table>
!

CSS 

              
                /* Variables */
$l1-color: #ffffff;
$l2-color: #e3e1e1;
$l3-color: #c8c3c4;
$d1-color: #424242;
$a1-color: #722f37;
$thicker: 800;

/* Table Settings */
.nestedTable {
    width: 100%;
    table-layout: fixed;
    border-collapse: collapse;

    th {
        background: $d1-color;
        color: $l1-color;
        padding:2px;
    }

    td, th {
        text-align: center;
    }
// column sizing
    .tinyCol {
        width: 2.5%;
    }

    .smallCol {
        width: 5%;
    }

    .mediumCol {
        width: 15%;
    }

    .largeCol {
        width: 20%;
    }

    .xlargeCol {
        width: 25%;
    }
// header style
    .header {
        font-weight: $thicker;
    }
  .pending{
    color:$a1-color;
    font-weight:$thicker;
    font-style: italic;
  }

// drop-down style 
tr{
  background-color:$l2-color;
  border: 1px solid $l3-color;
}  
// cordinates with responsive size both must be 
@media only screen and (min-width: 767px) {
   tr:nth-child(3n+1){
     background-color:$l1-color;
   border:none;}
 }
}

// hide on toggle
.display-none {
    display: none;
}

// button style
.showMore {
    color: $d1-color;
    text-decoration: none;

    &:hover {
        color: $d1-color;
        text-decoration: none;
      cursor:pointer;
    }
}

// Responsive Design
@media only screen and (max-width: 767px) {
  
      // uses the data label as header
td:nth-of-type(n):before { content: attr(data-label); }
  // zebra striping
tr{&:nth-child(6n+1), &:nth-child(6n+3) {
  background-color:$l1-color;}}
  
    // hides elements on mobile
    .hideOnMobile {
        position: absolute;
        top: -9999px;
        left: -9999px;
        display: none;
    }

    .nestedTable .spacer, tr .spacer {
        display: none;
    }

    // changes table layout
    .nestedTable {
        table, thead, tbody, th, td, tr {
            display: block;
        }
      
        // hide table headers 
        thead tr {
            position: absolute;
            top: -9999px;
            left: -9999px;
          
        }

        td {
            // behaves  like a "row"
            border: none;
            border-bottom: 1px solid $l3-color;
            position: relative;
            padding-left: 50%;

            &:before {
                // now like a table header
                position: absolute;
                // top/left values mimic padding
                left: 6px;
                width: 45%;
                white-space: nowrap;
              font-weight: $thicker;
            }
        }

        .tinyCol, .smallCol, .mediumCol, .largeCol, .xlargeCol {
            width: auto;
        }
    }
}
!

JS 

              
                $(".showMore").click(function() {
  var tr = $(this).parent().parent().nextAll(':lt(2)');
      $(this).toggleClass('fa-angle-double-right fa-angle-double-down')
  if (tr.is(".display-none")) {
    tr.removeClass('display-none');
  } else {
    tr.addClass('display-none');
  }
})
!
999px

Console