body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
}

.header {
    background-color: #007bff;
    color: #fff;
    padding: 20px;
    text-align: center;
}

.header h1 {
    margin: 0;
}

.currently-working {
    max-width: 90%;
    margin: 20px auto;
    padding: 20px;
    background-color: #f0f0f0;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.currently-working h2 {
    margin-top: 0;
    color: #007bff;
}

.currently-working p {
    margin-bottom: 0;
}

.timeline {
    max-width: 90%;
    margin: 20px auto;
    position: relative;
}

.timeline-item {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    margin-bottom: 30px;
}

.timeline-content {
    flex: 1;
    padding: 20px;
    background-color: #fff;
    border: 2px solid #007bff;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin-right: 20px;
}

.timeline-content h3 {
    margin-top: 0;
    color: #007bff;
}

.timeline-content p {
    margin-bottom: 0;
}

.timeline-date {
    position: relative;
    flex: 0 0 auto;
    padding: 10px;
    background-color: #007bff;
    color: #fff;
    border-radius: 5px;
    font-weight: bold;
}

.sub-timeline {
    margin-top: 20px;
    flex: 1;
    width: 100%;
}

.sub-timeline-item {
    display: flex;
    margin-top: 10px;
}

.sub-timeline-content {
    flex: 1;
    padding: 10px;
    background-color: #f0f0f0;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.sub-timeline-content h4 {
    margin-top: 0;
    margin-bottom: 5px;
    color: #007bff;
}

.timeline-item.current .timeline-content {
    border-color: #28a745;
}

.timeline-item.current .timeline-date {
    background-color: #28a745;
}

@media (max-width: 768px) {
    .timeline-item {
        flex-direction: column;
    }
    
    .timeline-content {
        margin-right: 0;
        margin-bottom: 20px;
    }
}