退休日期计算器

 body {
	font-family:Arial,sans-serif;
	background-color:#f4f4f9;
	color:#333;
	margin:0;
	padding:0;
	display:flex;
	justify-content:center;
	align-items:center;
	flex-direction:column;
	height:100vh;
}
.container {
	background-color:#fff;
	padding:20px;
	border-radius:10px;
	box-shadow:0 4px 8px rgba(0,0,0,0.1);
	max-width:400px;
	width:100%;
	text-align:center;
}
h1 {
	text-align:center;
	color:#4CAF50;
}
label {
	font-weight:bold;
}
input,select {
	width:100%;
	padding:10px;
	margin:10px 0;
	border-radius:5px;
	border:1px solid #ddd;
	font-size:16px;
}
button {
	width:100%;
	padding:12px;
	background-color:#4CAF50;
	color:#fff;
	border:none;
	border-radius:5px;
	font-size:16px;
	cursor:pointer;
}
button:hover {
	background-color:#45a049;
}
.result {
	margin-top:20px;
	background-color:#f9f9f9;
	padding:15px;
	border-radius:5px;
	box-shadow:0 2px 4px rgba(0,0,0,0.1);
}
.result p {
	font-size:16px;
	margin:10px 0;
}
.error {
	color:red;
	font-size:14px;
}
.image-container {
	margin-top:20px;
}
.image-container img {
	max-width:100%;
	height:auto;
	border-radius:10px;
}