kitcube/src/css/index.css

.HolyGrail {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.HolyGrail-header {
    display: flex;
    flex-direction: row;
    order: -1;
}

.HolyGrail-body {
    display: flex;
    flex: 1;
}

.HolyGrail-content {
    flex: 1 0 auto;
}

.HolyGrail-sidebar {
    flex: 0 0 210px;
    order: 0;
}

.HolyGrail-header {
    background: #333;
    border-bottom: 1px solid #d8d8d8;
}

.HolyGrail-sidebar {
  border-radius: 3px;
  background: #eeeeee;
}

.HolyGrail-header-brand {
    flex: 0 0 10em;
    text-align: center;
    font-size: 1.5em;
    padding: 0.5em 0;
    /*color: #d8412f;*/
    /*background-color: #d8d8d8;*/
}

body {
    margin: 0;
    background: #f5f5f5;
}

.toggle-sidebar {
    font-size: 1.5em;
    background-color: #e8e8e8;
    padding: 2px;
}

.toggle-wrapper {
    padding: 1em;
    width: auto;
    overflow: hidden;
}