.form-container {
            background-color: #ffffff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            margin-top: 20px;
        }
        .form-label {
            font-weight: 500;
        }
        .form-control, .form-select {
            /*background-color: #e9ecef;*/
                border: 2px solid var(--line);
            border-radius: 2px;
        }
        .btn-register {
            background-color: #dc3545;
            color: #ffffff;
            border: none;
            width: 100%;
        }
        .btn-register:hover {
            background-color: #c82333;
        }
    .phone-input {
        padding: 8px;
    }
        
    .selected-display{
            border: 2px solid var(--line);
    }
    
    #phoneValid{
        border: none;
        margin: 0px;
    }
    
    .selected-display{
            border: 2px solid #e0e0e0 !important;
    }
    
    #address{
         border: 2px solid #e0e0e0 !important;
         border-radius: 2px;
         height: 60px;
    }
    #invoice_file{
        border-radius: 5px;
    border: 2px solid var(--line);
    }
    
    #product_file{
        border-radius: 5px;
    border: 2px solid var(--line);
    }
    
    #purchase_date{
        border-top-right-radius: 0px !important;
        border-bottom-right-radius: 0px !important;
    }