div#container {
    padding: 3vw !important;
    display: flex;
    justify-content: space-around;
}

    div#container > section#middle {
        background: var(--color-surface);
        padding: 0;
        width: 100%;
        min-height: 100vh;
        box-shadow: var(--shadow-soft);
        border-radius: 0.5vw;
        overflow: hidden;
        transition: all 0.3s ease;
        border: 1px solid var(--color-border-strong);
    }
    
    div#container > section#middle:hover {
        box-shadow: var(--shadow-hover);
    }

        div#container > section#middle > iframe {
            width: 100%;
            min-height: 100vh;
            border: none;
            display: block;
        }