gridstack-demo.css

.grid-stack-item-content {
  background: white;
  color: #2c3e50;
  font-family: 'Indie Flower', cursive;
  text-align: center;
  font-size: 20px;
}

.grid-stack-item-content .fa {
  font-size: 64px;
  display: block;
  margin: 20px 0 10px;
}

header a,
header a:hover {
  color: #fff;
}

.darklue {
  background: #2c3e50;
  color: #fff;
}
.darklue hr.star-light::after {
  background-color: #2c3e50;
}