<form id="contact_form" action="#" method="POST" enctype="multipart/form-data">
  <div class="row">
    <label class="required" for="name">Name:</label><br />
    <input id="name" class="input" name="name" type="text" value="" size="30" /><br />
    <span id="name_validation" class="error_message"></span>
  </div>
  <div class="row">
    <label class="required" for="email">Email:</label><br />
    <input id="email" class="input" name="email" type="text" value="" size="30" /><br />
    <span id="email_validation" class="error_message"></span>
  </div>
  <div class="row">
    <label class="required" for="message">Message:</label><br />
    <textarea id="message" class="input" name="message" rows="7" cols="30"></textarea><br />
    <span id="message_validation" class="error_message"></span>
  </div>
    
    <input id="submit_button" type="submit" value="Send email" />
</form>
 
 #contact_form {
  background-color: #405d27;
  padding-top: 20px;
  padding-bottom: 20px;
  }

.row label{
  color: #FFFFFF;
  font-size: 18px;
  margin-left: 10px;
}

input[type=text], textarea {
  text-align: center;
  background-color: #82b74b;
  border-radius: 10px;
  margin: auto 0;
  color: #FFFFFF;
  margin-left: 10px;
  margin-top: 10px;
  margin-bottom: 10px;
  box-shadow: 5px 5px 10px #3e4444;
  }

input[type=text] {
  height: 25px;
}

input[type=submit] {
  background-color: #ff7b25;
  color: #FFFFFF;
  border-radius: 10px;
  font-size: 18px;
  margin-left: 10px;
  box-shadow: 5px 5px 5px #3e4444;
}
<iframe class="embeddedObject shadow resizable" name="embedded_content" scrolling="no" frameborder="0" type="text/html" 
        style="overflow:hidden;" src="https://www.screencast.com/users/russell.santos/folders/APHP/media/45019485-2174-4b64-8dd1-43881bca8a5f/embed" height="576" width="1024" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>