portainer/app/react/sidebar/Header.module.css

.root {
  color: white;
}

.toggle-button {
  border: 0;
  margin: 0;
  padding: 0;
  background: initial;
  float: right;
  padding-right: 28px;
  line-height: 60px;
}

.root {
  height: 60px;
  list-style: none;
  text-indent: 20px;
  font-size: 18px;
  background: var(--bg-sidebar-header-color);
}

.root a {
  color: #fff;
}

.root a:hover {
  text-decoration: none;
}