body {
    margin: 0;
    background: #0b0b0b;
    color: #d0d0d0;
    font-family: Tahoma, Arial, sans-serif;
    font-size: 14px;
}

#app {
    width: 100%;
    height: 100%;
}

#main {
    margin-left: 220px;
    height: 100%;
    overflow-y: auto;
    box-sizing: border-box;
}

.container {
    padding: 20px;
}