data_board/src/style.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#app {
  display: flex;
  flex-direction: column;
  min-width: 100vw;
  min-height: 100vh;
  background: linear-gradient(135deg, #1a2a6c, #2c3e50);
}