.dhv-container {
    max-width: 100%;
    margin: 0 auto;
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.dhv-container h2 {
    color: #333 !important;
    font-size: 24px;
    margin-bottom: 20px;
    text-align: center;
}

.dhv-container form {
    display: flex;
    flex-direction: column;
}

.dhv-container label {
    font-size: 16px;
    color: #555;
    margin-bottom: 5px;
}

.dhv-container select {
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    background-color: white;
}

.dhv-container input[type="submit"] {
    background-color: #4CAF50;
    color: white;
    padding: 12px;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.dhv-container input[type="submit"]:hover {
    background-color: #45a049;
}

#dhv-resultat {
    margin-top: 20px;
    padding: 15px;
    background-color: #e8f5e9;
    border: 1px solid #c8e6c9;
    border-radius: 5px;
    font-size: 18px;
    color: #2e7d32;
    text-align: center;
}

@media (max-width: 480px) {
    .dhv-container {
        padding: 15px;
    }
    
    .dhv-container h2 {
        font-size: 20px;
    }
    
    .dhv-container select,
    .dhv-container input[type="submit"] {
        font-size: 14px;
    }
    
    #dhv-resultat {
        font-size: 16px;
    }
}