.responsive-iframe {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 100%;
}

.jstree-node {
    position: relative;
}

    .jstree-node .spanbutton {
        position: absolute;
        right: 0;
        bottom: 0;
        display: block;
    }

.btnred {
    color: red
}

.btngreen {
    color: green
}