fieldset.editor>div.output textarea.editor {
    font-family:monospace;
    background-color:black;
    color:white;
    border:solid 1px red;
    padding:0;
    width:0;
    height:20px;
    margin:0;
    position:relative;
    float:right;
}
fieldset.editor>div.output div.lineno {
    font-family:monospace;
    float:left;
}
fieldset.editor>div.output div.lineno>div.item {
    text-align:right;
    border:solid 1px black;
    padding:0 4px;
    height:20px;
    margin:0;
}
fieldset.editor>div.output div.lineno>div.item:hover {
    background-color:green;
}
fieldset.editor>div.output div.lineno>div.item.select {
    background-color:red;
}
fieldset.editor>div.output div.content {
    font-family:monospace;
    border-left:solid 2px red;
    padding-left:10px;
}
fieldset.editor>div.output div.content>pre.item {
    border:solid 1px black;
    padding:0;
    height:20px;
    margin:0;
}
fieldset.editor>div.output div.content>pre.item:hover {
    background-color:green;
}