body {
    display: flex;
    flex-direction: column;
    height: 100vh;
    margin: 0;
}
.main-content {
    display: flex;
    flex-grow: 1;
}
.sidebar {
    width: 250px;
    background-color: #f1f1f1;
    padding: 20px;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}
.sidebar a {
    display: block;
    padding: 10px;
    margin: 10px 0;
    color: black;
    text-decoration: none;
    background-color: #ddd;
    border-radius: 5px;
}
.sidebar a:hover {
    background-color: #ccc;
}
.content {
    flex-grow: 1;
    padding: 20px;
}
.tab-content {
    display: none;
}
.tab-content.active {
    display: block;
}
.back-button {
    text-align: center;
    margin-top: 20px;
}
.back-button button {
    float: right;
    padding: 10px 20px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
.back-button button:hover {
    background-color: #0056b3;
}