[class^="popout-"] [class^="row-"] {
    /* removes the blue background when hovering over a thread */
    background-color: transparent;
}

[aria-label="Channels"] [class^="content"],
[class^="popout-"] [class^="row-"] {
    border-style: dashed;
    border-width:1px;  
    border-color: transparent;
}

[aria-label="Channels"] [class^="content"]:hover,
[class^="popout-"] [class^="row-"]:hover {
    border-color: #b00b69;
}