body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    flex-direction: column;
}

header {
    background-color: #007bff;
    color: white;
    padding: 1rem;
    width: 100%;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
}

main {
    margin-top: 80px;
    padding: 2rem;
    width: 90%;
    max-width: 800px;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.search-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    align-items: flex-end;
    margin-bottom: 2rem;
}

.search-field {
    display: flex;
    flex-direction: column;
    flex: 1 1 200px;
}

.search-field label {
    font-weight: bold;
    margin-bottom: 0.5rem;
}

input, select {
    padding: 0.75rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
    width: 100%;
}

button {
    padding: 0.75rem 1.5rem;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #218838;
}

.results-container h2 {
    text-align: center;
    margin-bottom: 1rem;
}

.post-office-card {
    border: 1px solid #eee;
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    background-color: #f9f9f9;
}

.post-office-card h3 {
    margin-top: 0;
    color: #007bff;
}

.post-office-card p {
    margin: 0.5rem 0;
}