.up-panel {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background: #1a1a2e;
  z-index: 1000;
}

.main-body {
  padding-top: 60px;
}

.panel {
  height: 400px;
  margin: 20px;
  background: #16213e;
  border-radius: 8px;
}