.container {
  display: flex;
  flex: 1;
}

.sider {
  width: 256px;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.content {
  flex: 1;
  display: flex;
  flex-direction: column;
  width: calc(100vw - 256px);
}
