body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}
.window {
    display: flex;
    width: 60%;
    height: 60%;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    background-color: white;
    border-radius: 8px;
}
.nav {
    width: 25%;
    background-color: #50372c;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}
.nav button {
    width: 100%;
    margin: 10px 0;
    padding: 10px;
    border: none;
    border-radius: 4px;
    background-color: #7e5b53;
    color: white;
    cursor: pointer;
    transition: background-color 0.3s;
}
.nav button:hover {
    background-color: #1abc9c;
}
.content {
    width: 75%;
    padding: 20px;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
    overflow-y: auto;
}