zulip-desktop/app/renderer/css/main.css

/*******************
 *  General rules  *
 *******************/

html,
body {
    height: 100%;
    margin: 0;
    cursor: default;
    user-select: none;
}

#content {
    display: flex;
    height: 100%;
    background: #fff url(../img/ic_loading.gif) no-repeat;
    background-size: 60px 60px;
    background-position: center;
}

.toggle-sidebar {
    background: #222c31;
    width: 54px;
    padding: 27px 0 20px 0;
    justify-content: space-between;
    display: flex;
    flex-direction: column;
    -webkit-app-region: drag;
    overflow: hidden;
    transition: all 0.5s ease;
    z-index: 2;
}

.toggle-sidebar div {
    transition: all 0.5s ease-out;
}

.sidebar-hide {
    width: 0;
    transition: all 0.8s ease;
}

.sidebar-hide div {
    transform: translateX(-100%);
    transition: all 0.6s ease-out;
}

@font-face {
    font-family: 'Material Icons';
    font-style: normal;
    font-weight: 400;
    src: local('Material Icons'), local('MaterialIcons-Regular'), url(../fonts/MaterialIcons-Regular.ttf) format('truetype');
}


/*******************
  *   Left Sidebar  *
  *******************/

#tabs-container {
    display: flex;
    align-items: center;
    flex-direction: column;
}

.material-icons {
    font-family: 'Material Icons';
    font-weight: normal;
    font-style: normal;
    /* Preferred icon size */
    font-size: 24px;
    display: inline-block;
    line-height: 1;
    text-transform: none;
    letter-spacing: normal;
    word-wrap: normal;
    white-space: nowrap;
    direction: ltr;
    /* Support for all WebKit browsers. */
    -webkit-font-smoothing: antialiased;
    /* Support for Safari and Chrome. */
    text-rendering: optimizeLegibility;
}

#actions-container {
    display: flex;
    flex-direction: column;
    position: fixed;
    bottom: 0;
}

.action-button {
    display: flex;
    flex-direction: column;
    padding: 12px;
}

.action-button:hover {
    cursor: pointer;
}

.action-button i {
    color: #6c8592;
    font-size: 28px;
}

.action-button:hover i {
    color: #98a9b3;
}

.action-button.disable {
    opacity: 0.6;
}

.action-button.disable:hover {
    cursor: not-allowed;
}

.action-button.disable:hover i {
    color: #6c8592;
}

.action-button.active {
    /* background-color: rgba(255, 255, 255, 0.25); */
    background-color: #efefef;
    opacity: 0.9;
    padding-right: 14px;
}

.action-button.active i {
    color: #1c262b;
}

.tab:first-child {
    margin-top: 8px;
}

.tab {
    position: relative;
    margin: 2px 0;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.tab .server-icons {
    border-radius: 50%;
    width: 30px;
    padding: 3px;
    height: 30px;
    vertical-align: top;
}

.tab .server-tab {
    width: 100%;
    height: 35px;
    position: relative;
    margin: 5px 0 2px 0;
    z-index: 11;
    line-height: 31px;
    color: #eee;
    text-align: center;
    overflow: hidden;
    opacity: 0.6;
    padding: 2px 0;
}

.tab .server-tab:hover {
    opacity: 0.8;
}

.tab.functional-tab {
    height: 46px;
    padding: 0;
}

.tab.functional-tab.active .server-tab {
    padding: 2px 0;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.25);
}

.tab.functional-tab .server-tab i {
    font-size: 28px;
    line-height: 36px;
}

.tab.active .server-tab {
    opacity: 1;
    background-color: #648478;
}

.tab .server-tab-badge.active {
    border-radius: 9px;
    min-width: 11px;
    padding: 0 3px;
    height: 17px;
    background-color: #f44336;
    font-size: 10px;
    font-family: sans-serif;
    position: absolute;
    right: 5px;
    z-index: 15;
    top: 6px;
    float: right;
    color: #fff;
    text-align: center;
    line-height: 17px;
    display: block;
    right: 0;
}

.tab .server-tab-badge {
    display: none;
}

.tab .server-tab-badge.close-button {
    width: 16px;
    padding: 0;
}

.tab .server-tab-badge.close-button i {
    font-size: 13px;
    line-height: 17px;
}

#add-tab {
    display: flex;
    align-items: center;
    flex-direction: column;
}

.tab .server-tab-shortcut {
    color: #648478;
    font-size: 12px;
    text-align: center;
    font-family: sans-serif;
    margin-bottom: 5px;
}


/*******************
  *   Webview Area  *
  *******************/

#webviews-container {
    display: flex;
    height: 100%;
    width: 100%;
}

webview {
    /* transition: opacity 0.3s ease-in; */
    flex-grow: 1;
    position: absolute;
    width: 100%;
    height: 100%;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

webview.download-webview {
  z-index: -1;
  pointer-events: none;
}

webview.onload {
    transition: opacity 1s cubic-bezier(0.95, 0.05, 0.795, 0.035);
}

webview.active {
    opacity: 1;
    z-index: 1;
    visibility: visible;
}

webview.disabled {
    opacity: 0;
}

webview.focus {
    outline: 0px solid transparent;
}

/* Tooltip styling */

#back-tooltip,
#reload-tooltip,
#setting-tooltip {
    font-family: sans-serif;
    background: #222c31;
    margin-left: 48px;
    padding: 6px 8px;
    position: absolute;
    margin-top: 0px;
    z-index: 1000;
    color: white;
    border-radius: 4px;
    text-align: center;
    width: 55px;
    font-size: 14px;
}

#back-tooltip:after,
#reload-tooltip:after,
#setting-tooltip:after {
    content: " ";
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-right: 8px solid #222c31;
    position: absolute;
    top: 7px;
    right: 68px;
}

#add-server-tooltip,
.server-tooltip {
    font-family: 'arial';
    background: #222c31;
    left: 56px;
    padding: 10px 20px;
    position: fixed;
    margin-top: 8px;
    z-index: 5000 !important;
    color: #fff;
    border-radius: 4px;
    text-align: center;
    width: max-content;
    font-size: 14px;
}

#add-server-tooltip:after,
.server-tooltip:after {
    content: " ";
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    border-right: 8px solid #222c31;
    position: absolute;
    top: 10px;
    left: -5px;
}

#collapse-button {
    bottom: 30px;
    left: 20px;
    position: absolute;
    width: 24px;
    height: 24px;
    background: #222c31;
    border-radius: 20px;
    cursor: pointer;
    box-shadow: #999 1px 1px;
}

#collapse-button i {
    color: #efefef;
}

#main-container {
    display: flex;
    height: 100%;
    width: 100%;
    position: relative;
    flex-grow: 1;
    flex-basis: 0px;
}

.hidden {
    display: none !important;
}


/* Full screen Popup container  */

.popup .popuptext {
    visibility: hidden;
    background-color: #555;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 9px 0;
    position: absolute;
    z-index: 1000;
    font-family: arial;
    width: 240px;
    top: 15px;
    height: 20px;
    left: 43%;
}

.popup .show {
    visibility: visible;
    animation: cssAnimation 0s ease-in 5s forwards;
    animation-fill-mode: forwards;
}

@keyframes cssAnimation {
    from {
        opacity: 0;
    }
    to {
        width: 0;
        height: 0;
        overflow: hidden;
        opacity: 1;
    }
}