Theme for Mozilla ThunderBird of Outlook 2010

/* Move menu bar above toolbar */
#toolbar-menubar {

background: #C9D9EB !important;

color: #013E77 !important;

border: 1px solid #013E77 !important;

/* order: -1 !important; */

font-weight: 1000 !important;

}

 /* Move window buttons to top right */

.titlebar-buttonbox-container {

position: fixed !important;

top: 0px !important;

right: 0px !important;

height: 20px !important;

z-index: 1000;

}

 /* Sidebar style (folder pane) */

#folderPane,

#folderPaneHeaderBar {

background-color: #C9D9EB !important;

border: 1px solid #013E77 !important;

font-size: 10px !important;
}

 /* Unified toolbar (top) styling */

#unifiedToolbar {

height: 35px !important;

background: #C9D9EB !important;

color: #013E77 !important;

font-weight: 600 !important;

padding: 15px 0px !important;

border-bottom: 1px solid #013E77 !important;

margin-bottom: -15px;

Margin-top: -15px;

}

 /* New Message button in sidebar */

#folderPaneWriteMessage {

background-color: #C9D9EB !important;

color: #013E77 !important;

font-weight: 600 !important;

border-radius: 4px !important;

padding: 4px 8px !important;

}

 /* zebra striping */
#threadTree tr:nth-child(2n) {
background-image: linear-gradient(rgba(0,0,0,.10), rgba(0,0,0,.10)) !important;
}

/* threads pane lines */
table[is="tree-view-table"] td {
border-bottom: solid 1px blue !important;

}

/* bold sender in cards view */
.thread-card-container :is(.sender){
font-weight: bold !important;
color: blue !important;
}

#msgHeaderView {
background-color: #C9D9EB !important;

}


#statusTextBox {
background-color: #C9D9EB !important;
border: 1px solid #013E77 !important;
}

/* Slected email in the list */
#threadTree {
border-right: 1px solid #013E77 !important;
background-color: #C9D9EB !important;
}

#calendar {
border: 1px solid #013E77 !important;
background-color: #C9D9EB !important;

}
#messageListHeader {
background-color: #C9D9EB !important;
}
/*not selected tab same as menu bar colour */
.tab-background:not([selected=true]) {
  background-color:  #C9D9EB !important;
}
/*Change colour of the blue top line on selected tab - */
.tab-line[selected=true] {
  background-color: #013E77 !important;
}

/*Message Header area - */
.message-header-container,
.message-header-extra-container {
 row-gap: 0px  !important;

}

/* MESSAGE HEADER  */

.message-header-container {
height: 67px !important;
background-color: #C9D9EB !important;
border-bottom: 1px solid #013E77 !important;
}
/* Remove KB shortcut for top mail list search box */
.kbd-container { display: none !important }
}

/* Email Header lines order */
#expandedsubjectRow {

}
#headerSenderToolbarContainer {
  order: 1 !important;
}
#expandedreply-toRow {
 display: none !important;
}
#expandedtoRow {
 display: none !important;
}

#navigation-toolbox {
background-color: #C9D9EB !important;
}
#today-none-box {
  border-top: 1px solid #013E77 !important;
  background-color: #C9D9EB !important;
}
treechildren::-moz-tree-row(selected, focus) {
  background-color: #C9D9EB !important;
}
treechildren::-moz-tree-row(selected, current, focus) {
  outline-color: #C9D9EB !important;
}
/*****Make the hover color transparent******/
*|*:root {
--listbox-hover: transparent !important;
}
.container:hover { background-color: transparent !important;
}
tr[is="thread-row"]:hover {
background-color: transparent !important;
}
#calendar-status-todaypane-button {
  border: 1px solid #013E77 !important;
  background-color: #C9D9EB !important;
}
#agenda {
  border: 1px solid #013E77 !important;
  background-color: #C9D9EB !important;
}
.sidebar-header {
  border: 1px solid #013E77 !important;
  background-color: #C9D9EB !important;
}
#agenda-toolbar {
  border: 1px solid #013E77 !important;
  background-color: :host,
}
.container {
 background-color: #C9D9EB !important;
 }
#toolbar-menubar {
 font-weight: bold !important;
}
--bg-current: var(--#C9D9EB !important);
}
#spacesToolbarReveal {
background-color: #C9D9EB !important;
border: 1px solid #013E77 !important;
}
#spacesToolbar {
background-color: #C9D9EB !important;
border: 1px solid #013E77 !important;
}
/* card bg colour for selected messages */
tr[is="thread-card"].selected .card-container {

     background-color: #C9D9EB !important;
     outline: 1px solid #013E77 !important;
}
#folderTree ul {
--indent: calc((0px + 1px)  *  var(--depth)) !important;
}