embark/demo/app/css/main.css

div {
  margin: 15px;
}

.logs {
  background-color: black;
  font-size: 14px;
  color: white;
  font-weight: bold;
  padding: 10px;
  border-radius: 8px;
}

.tab-content {
  border-left: 1px solid #ddd;
  border-right: 1px solid #ddd;
  border-bottom: 1px solid #ddd;
  padding: 10px;
  margin: 0px;
}

.nav-tabs {
  margin-bottom: 0;
}