#sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    width: 250px;
    z-index: 9;
    padding-top: 50px;
    background-color: #789;

    overflow-x: hidden;
    overflow-y: none;
    transition: 0.25s;

    max-width: 50%;
}

#sidebar #chats {
    overflow-y: scroll;
    height: calc(100% - 50px);
    text-align: center;
    font-size: 3rem;
}

#sidebar[expanded="false"] #chats {
    visibility: hidden;
}


#sidebar #chats:empty::after {
    content: "No chats";
}

#sidebar #chats > li {
    list-style-type: none;
    overflow-x: hidden;
    box-sizing: border-box;
    padding: 0 0 0 10px;
    margin: 0;
    width: 100%;
    text-align: left;
    white-space: nowrap;
    cursor: pointer;
    border-top: 1px solid #89a;
}
#sidebar #chats > li:last-child {
    border-bottom: 1px solid #89a;
}

#sidebar #chats > li.selected {
    background: #eee !important;
}

#sidebar #chats > li:hover {
    background: #abc;
}

#sidebar #chats > li[channel=true]::before {
    content: "#";
}