#pantallaDig{
  
width: 80%;
margin-top: 5%;
margin-left: 10%; 
height: 100px;
border: 4px;
border-color: blue;
background-color:white;
font-size: 30px;
}

#calculadora{
 border-radius: 20px;
 border-color: blue;
 border-style: double;
 border-width: 5px;
 color :blue;
 height: 600px;
 width: 500px;
 padding-left: 10px;


 margin-left: 30%;
 padding: 0px 15px 0px 15px;
 background-color:lightyellow;
 text-align: center;
 font-size: 20px;
}
 
header{
 
	text-align:center;
	background-color:lightgray;
	padding: 5px 5px 5px 5px;
	}