body{
    padding: 0;
    margin: 0;
    background-color: #000000;
}
.calculator-box{
	margin-top: 50px;
	width: 400px;
	position: relative;
	margin-left: auto;
	margin-right: auto;
	padding: 20px;
	background: transparent;
	border: 3px solid white;
	border-radius: 20px;
}
.display{
	width: 100%;
	height: 100px;
	background: transparent;
	border: 3px solid white;
	margin-bottom: 20px;
	border-radius: 20px;
	display: flex;
	justify-content: flex-end;
	align-items: center;
}
.display h2{
	color: white;
	margin-right: 20px;
}
.oper{
	display: flex;
	justify-content: space-evenly;
	align-items: center;
}
button{
	width: 60px;
	height: 60px;
	border-radius: 50%;
	border: 2px solid white;
	margin: 20px 0;
	background-color: black;
	color: aliceblue;
	font-size: 20px;
	cursor: pointer;
}
button.enter{
	width: 100%;
	height: 60px;
	border-radius: 20px;
	border: 2px solid white;
	margin: 20px 30px;
	background-color: black;
	color: aliceblue;
	font-size: 20px;
	cursor: pointer;
}
button:hover{
	background-color: rgba(255, 255, 255, 0.304);
	color: black;
}

@media (max-width:600px) {
	.calculator-box{
		
		width:  60vw;
	}
	.display{
		height: 70px;
		margin-bottom: 10px;
		background-color: white;
	}
	.display h2{
		color: black;
	}
	button{
		margin: 10px 0;
	}
	button.enter{
		margin: 10px 10px;
	}
}