* {
    margin: 0;
    padding: 0;
}

.main {
    display: flex;
}

.aside {
    width: auto;
    min-width: 300px;
    height: 100vh;
    background-color: #0d0d0e;
    text-align: center;
    color: #fff;
}

.title {
    height: 10vh;
    line-height: 10vh;
    font-family: Simsun, sans-serif;
    font-style: italic;
    font-size: 1.3vw;
}

.button {
    height: 5vh;
    line-height: 5vh;
}

.button {
    cursor: pointer;
}

.active {
    background-color: #0D6EFD;
}

iframe {
    width: 100vw;
    height: 100vh;
}