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can you help me to explain why css doesnt work i copied html <html> <head> </head> <body> <section> <h1>The Eiffel Tower</h1> <a href="https:sololearnassets.azureedge.net/" target="blank" > <img src="https:sololearnassets.azureedge.net/eiffel-tower.jpg" alt="A Tree" width="30%" > </a> <p><b>The Eiffel Tower</b>is a wrought-iron tower that stands <strong>1,063 ft (324 m)</strong>tall in <b>Paris.</b></p> <p>Currently, the <b>Eiffel Tower</b> is the most-visited monument in the world with over <b>7 million </b>visitors a year.</p> <p>Visitors can choose to go up using the Tower lift or the stairs. There are <b>1,665 steps</b>to the top.</p> </section> <section> <h1><b>Transport</b></h1> <ul> <li> Bus: lines 42, 69, 72, 82 and 87.</li> <li>Metro: Trocadero, Ecole militaire.</li> <li>Train: Champ de Mars - Tour Eiffel, line C</li> </ul> <section> <H1 style="strong"><b>Prise:</b></H1> <table border="1"> <tr> <th>category </th> <th>price </th> </tr> <tr> <td>Adults</td> <td>12
lt;/td> </tr> <tr> <td>Children</td> <td>5lt;/td> </tr> </table> </section> <br> <section> <form style="label"> <br><label for="adults">Adults: </label> <input type="text" id="adults" > </br> <br> <label for="CHILDREN">Children: </label> <input type="TEXT" id="children"> </br> <input type="button" value="Buy"> </form> </section> </body> <footer style="footer"> © </footer> </html> and css footer{ background-color: color:#595959; font-size:14px; } strong {color: #595959; } label{ font-size: 16px; font-weight: bold; }