@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");

body {
	margin: 0;
	padding: 0;
	font-family: "Poppins", serif;
	display: flex;
	align-items: center;
	justify-content: center;
	background: #000000;
	height: 100vh;
}
.container {
	width: 100%;
	height: 100vh;
	background: #ffff;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
}
#result {
	font-weight: 600;
	font-size: 4em;
	height: 20%;
	width: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
}
#operation {
	font-weight: 600;
	font-size: 3.7em;
	height: 15%;
	width: 100%;
	display: flex;
	align-items: center;
	justify-content: center;
}
/* #operation-number {
	text-align: right;
} */
.buttons {
	font-weight: 500;
	font-size: 1.5rem;
	height: 65%;
	width: 100%;
	background: #f1f1f1;
	border-radius: 43px;
	display: flex;
	align-items: center;
	justify-content: center;
	flex-direction: column;
}
.row {
	display: flex;
	align-items: center;
	justify-content: space-around;
	width: 100%;
	margin: 0.5em 0em 0.5em 0em;
}
.btn {
	width: 2.5em;
	height: 2.5em;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 1.3em;
	font-weight: 600;
	background: #e2f2df;
	box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.25);
	border-radius: 10px;
}
.btn-op {
	background: #000000;
	color: #ffffff;
}

@media screen and (min-width: 768px) {
	.container {
		width: 30%;
		height: 100vh;
	}
}