body {
    font-family: 'IBMPlexSans', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #f4f4f4;
}

#app {
    display: flex;
}

nav {
    height: 100vh;
    width: 15%;
}