.drawer-layout {
    display: flex;
    margin: 0;
}
.sidebar {
    width: 200px;
    min-width : 200px;
    transition: width 0.4s ease;
}
.sidebar.collapsed {
    overflow: hidden;
    width: 0;
    min-width : 0;
    padding: 0;
}
.main {
    flex-grow: 1;
    padding: 20px;
}
.toggle-button {
    margin-bottom: 20px;
    cursor: pointer;
    padding: 10px 15px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
}