.container {
    text-align: center;
    padding: 20px;
}
input[type="text"] {
    padding: 10px;
    font-size: 16px;
    border: 2px solid #880808;
    border-radius: 5px;
    margin-right: 10px;
}
.tracking_button {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #880808;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}
@media only screen and (max-width: 768px) {
    .tracking_button {
        margin-top: 10px;
    }
    input[type="text"] {
        width: 90%;
        margin-right: 0;
    }
}
.progress-container {
    width: 80%;
    margin: 20px auto 0;
    background: #f0f0f0;
    border-radius: 5px;
    height: 8px;
    display: none;
}
.progress-bar {
    height: 100%;
    width: 0;
    background-color: #880808;
    border-radius: 5px;
    transition: width 5s linear;
}
.loader-container {
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    height: 100px;
    margin-top: 20px;
}
.loader {
    border: 6px solid #F55F5F;
    border-top: 6px solid #880808;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 2s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.result {
    display: none;
    text-align: center;
    padding: 20px;
    border: 2px solid #880808;
    border-radius: 10px;
    background-color: #880808;
    font-family: Arial, sans-serif;
    margin-top: 20px;
}
.result p  { color: #ffffff; }
.result h2 { color: #ffffff; }
.result a  { color: #ffffff; }
.result.active { display: block; }