Table class cannot be recognized/read in html/css

Question

I have a table that is supposed to have a "table-class" class, but the class isn't even recognized/read and the properties don't show up in the table. I'm using azure appServiceEditor and when I run the code the output is just a default stylesheet so the attribute of class="table-class" is not read. However, when I insert any other class instead of "Table Class", the properties are displayed. I don't understand what the problem is.

.table-class {
  position: absolute;
  display: block;
  font-family: arial, sans-serif;
  border-collapse: collapse;
  z-index: 10000000;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 5%;
  color: white;
}

.table-class td,
th {
  border: 1px solid #dddddd;
  text-align: left;
  padding: 8px;
}

.table-class tr:nth-child(even) {
  background-color: rgba(0, 0, 0, 0.6);
}

<table class="table-class">
  <tr>
    <th>Company</th>
    <th>Contact</th>
    <th>Country</th>
  </tr>
  <tr>
    <td>Alfreds Futterkiste</td>
    <td>Maria Anders</td>
    <td>Germany</td>
  </tr>
  <tr>
    <td>Centro comercial Moctezuma</td>
    <td>Francisco Chang</td>
    <td>Mexico</td>
  </tr>
  <tr>
    <td>Ernst Handel</td>
    <td>Roland Mendel</td>
    <td>Austria</td>
  </tr>
  <tr>
    <td>Island Trading</td>
    <td>Helen Bennett</td>
    <td>UK</td>
  </tr>
  <tr>
    <td>Laughing Bacchus Winecellars</td>
    <td>Yoshi Tannamuri</td>
    <td>Canada</td>
  </tr>
  <tr>
    <td>Magazzini Alimentari Riuniti</td>
    <td>Giovanni Rovelli</td>
    <td>Italy</td>
  </tr>
</table>

Answer 1

.table {
  position: absolute;
  display: block;
  font-family: arial, sans-serif;
  border-collapse: collapse;
  z-index: 10000000;
  background-color: rgba(0, 0, 0, 0.5);
  border-radius: 5%;
  color: white;
}

.table td,
th {
  border: 1px solid #dddddd;
  text-align: left;
  padding: 8px;
}

.table tr:nth-child(even) {
  background-color: rgba(0, 0, 0, 0.6);
}

Company	Contact	Country
Alfreds Futterkiste	Maria Anders	Germany
Centro comercial Moctezuma	Francisco Chang	Mexico
Ernst Handel	Roland Mendel	Austria
Island Trading	Helen Bennett	UK
Laughing Bacchus Winecellars	Yoshi Tannamuri	Canada
Magazzini Alimentari Riuniti	Giovanni Rovelli	Italy

Use this code instead of table class