css

body{


	background-color: blue;
	color: black;
	font-family: cursive;

}
form { height: 120px;
	width: 500px;
	background-color: lightgreen;
	padding: 0 20px 20px 20px;
	border: 10px solid black;
	 display: block;
  margin: 0 auto
	 }

img {
  display: block;
  margin: 0 auto;
}

.calculadora{
	display: block;
	margin: 0 auto;
	padding: 20px;
	background-color: lightblue;
	width: 370px;
	height: 500px;
	border-radius: 25px;
}

.calculadora td button {
	display: block;
	width: 70px;
	height: 70px;
	font-size: 25px;
}

#resultado{
display: block;
text-align: center;
font-size: 40px;
margin-bottom: 50px;
width: 300px;
height: 100px;
line-height: 100px;
background-color: white;
border-radius: 25px;
overflow-y: scroll;
}