#tdIframe .topContent {
    height: 40px;
    line-height: 40px;
    font-size: 16px;
    width: 100%;
    text-align: center;
    color: #000000;
    display: block;
    text-decoration: none;
    background-color: #FFFFFF;
    cursor: move;
    border-bottom: 1px solid #CBCBCB;
}
#tdIframe .frame_preview {
    height: 100%;
    width: 100%;
    padding-bottom: 40px;
}
#tdIframe a.button {
    height: 26px;
    width: 26px;
    color: #000000;
    text-decoration: none;
    position: absolute;
    bottom: 0;
    right: 0;
    margin: 0 12px 9px 0;
}
#tdIframe a.button, #tdIframe a.button {
    background-position: center center;
    background-repeat: no-repeat;
    background-size: contain;
    display: block;

    background-color: transparent !important;
}
#tdIframe #maximizeButton {
    display: block;
    background-image: url(../zoomin.svg);
}
#tdIframe #minimizeButton {
    display: none;
    background-image: url(../zoomout.svg);
}
#tdIframe.maximized #maximizeButton {
    display : none;
}

#tdIframe.maximized #minimizeButton {
    display : block;
}