body {
font-family: Arial, sans-serif;
background-color: #f4f6f8;
margin: 0;
padding: 0;
}

header {
background-color: #333;
color: white;
text-align: center;
padding: 20px;
}

.container {
display: flex;
justify-content: center;
gap: 40px;
margin-top: 40px;
flex-wrap: wrap;
}

.card {
background: white;
padding: 25px;
border-radius: 10px;
width: 300px;
box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

input {
width: 100%;
padding: 10px;
margin: 10px 0;
border-radius: 5px;
border: 1px solid #ccc;
}

button {
padding: 10px;
margin: 5px;
border: none;
background-color: #007bff;
color: white;
border-radius: 5px;
cursor: pointer;
}

button:hover {
background-color: #0056b3;
}

#result {
font-weight: bold;
margin-top: 10px;
}

ul {
padding-left: 20px;
}