div.editor {
    background: #272822;
    width: 110px;
    height: 196px;
    float: left;
}

textarea.editor {
    background-color: #272822;
    font-family: Inconsolata, "Courier New", monospace;
    color: #DDD;
    resize: none;
    border: none;
    padding: 0px;
    margin-left: 10px;
    margin-right: 0px;
    width: 100px;
    height: 196px;
    margin-top: 0px;
    margin-bottom: 0px;
    font-size: 1.0em;
    line-height: 1.4em;
}

div.interactive {
    margin-left: 115px;
    width: 440px;
    height: 205px;
    overflow: auto;
}
div.tall {
    height: 220px;
}

div.errSpan {
    padding: 10px;
    color:#f00;
}

@media only screen and (max-width: 750px) {
    div.interactive {
        margin-left: 115px;
        width: auto;
        height: 205px;
        overflow-x: auto;
        overflow-y: hidden;
    }
}