html, body {
    margin: 0;
    padding: 0;
}
.container {
    width: calc(100vw - 40px);
    height: calc(100vh - 80px);
    margin: 20px;
}
.thumb {
    width: 10%;
    height: 100%;
    text-align: center;
    float: left;
}
.thumb img {
    width: 75%;
    max-height: 80px;
    margin-bottom: 5px;
}
#app {
    width: 90%;
    height: 100%;
    float: left;
}

@media (max-width: 912px) {
    .thumb {
        height: auto;
        float: none;
        display: flex;
        width: 100%;
        flex-wrap: wrap;
        justify-content: space-between;
        margin-bottom: 20px;
    }

    .thumb img {
        width: 100px;
        height: 50px;
    }

    #app {
        width: 100%;
        height: 400px;
        float: none;
    }
}

.footer {
    height: 40px;
    line-height: 40px;;
    background: #666666;
    color: #fff;
    text-align: center;
}
.footer a {
    color: #fff;
}