html, body {
	position: relative;
	width: 100%;
	height: 100%;
}

body {
	color: #333;
	margin: 0;
	padding: 8px;
	box-sizing: border-box;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

a {
	color: rgb(0,100,200);
	text-decoration: none;
}

a:hover {
	text-decoration: underline;
}

a:visited {
	color: rgb(0,80,160);
}

label {
	display: block;
}

input, button, select, textarea {
	font-family: inherit;
	font-size: inherit;
	-webkit-padding: 0.4em 0;
	padding: 0.4em;
	margin: 0 0 0.5em 0;
	box-sizing: border-box;
	border: 1px solid #ccc;
	border-radius: 2px;
}

input:disabled {
	color: #ccc;
}

button {
	color: #333;
	background-color: #f4f4f4;
	outline: none;
}

button:disabled {
	color: #999;
}

button:not(:disabled):active {
	background-color: #ddd;
}

button:focus {
	border-color: #666;
}

button.calculator,
button.close {
	margin: .2em;
	border-radius: 50%;
	border: 2px solid black;
	color: black;

	height: 1.5em;
	width: 1.5em;
	font-size: 1.5em;

	content: '';

	display: flex;
	justify-content: center;
	align-items: center;
  }

button.plus {
	border: 2px solid green;
}
button.plus:before {
	content: '\FF0B';
}

button.minus {
	border: 2px solid red;
}
button.minus:before {
	content: '\FF0D';
}

button.close {
	border-radius: 25%;
	/* https://www.color-hex.com/color-palette/20141 */
	background-color:orange;
}
button.close:before {
	content: '\2716'
}

.price:before {
	content: '€ ';
}