html { 	font-family: Helvetica; 
		display: inline-block; 
		margin: 0px auto; 
		text-align: center;}
.on {
  background-color: green;
  color: white;
}

.off {
  background-color: red;
  color: white;
}
/* Group 1 buttons */
  .group1 {
    margin: 20px;
    display: inline-block;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 5px;
  }
  
  .group1 label {
    font-size: 16px;
    margin-right: 10px;
  }
  
  .group1 button  {
	background-color: #195B6A;
	border: none;
	color: #EDDCDD;
	padding: 10px 20px;
	text-align: center;
	text-decoration: none;
	text-decoration-color: aquamarine;
	display: inline-block;
	font-size: 16px;
	margin: 4px 2px;
	cursor: pointer;
	border-radius: 5px;
	box-shadow: 0px 2px 3px rgba(0, 0, 0, 0.2);
  }
  
  .group1 button.on {
    background-color: #4CAF50;
    color: white;
  }
  
  /* Group 2 buttons */
  .group2 {
    margin: 20px;
    display: inline-block;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 5px;
  }
  
  .group2 label {
    font-size: 16px;
    margin-right: 10px;
  }
  
  .group2 button {
    background-color: #f2f2f2;
    border: none;
    color: #555;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
    box-shadow: 0px 2px 3px rgba(0, 0, 0, 0.2);
  }
  
  .group2 button.on {
    background-color: #4CAF50;
    color: white;
  }
  
  /* Group 3 buttons */
  .group3 {
    margin: 20px;
    display: inline-block;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 5px;
  }
  
  .group3 label {
    font-size: 16px;
    margin-right: 10px;
  }
  
  .group3 button {
    background-color: #f2f2f2;
    border: none;
    color: #555;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
    box-shadow: 0px 2px 3px rgba(0, 0, 0, 0.2);
  }
  
  .group3 button.on {
    background-color: #4CAF50;
    color: white;
  }

  /* Group 4 buttons */
  .group4 {
    margin: 20px;
    display: inline-block;
    border: 1px solid #ccc;
    padding: 10px;
    border-radius: 5px;
  }
  
  .group4 label {
    font-size: 16px;
    margin-right: 10px;
  }
  
  .group4 button {
    background-color: #f2f2f2;
    border: none;
    color: #555;
    padding: 10px 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
    box-shadow: 0px 2px 3px rgba(0, 0, 0, 0.2);
  }
  
  .group4 button.on {
    background-color: #4CAF50;
    color: white;
  }