.flex-row {
  display: flex;
}
.flex-column {
  display: flex;
  flex-direction: column;
}
.content {
  height: calc(100vh - 16px - 4.4rem);
  flex-grow: 1;
  flex-wrap: wrap;
  overflow: scroll;
}
.menu-bar {
  border-radius: 0.5rem;
  display: flex;
  flex-grow: 0;
  flex-shrink: 0;
}
.sub-menu {
  display: flex;
  gap: 0.1rem;
}
.menu-bar.horizontal {
  justify-content: flex-end;
}
.menu-bar.horizontal .sub-menu {
  padding: 0.2rem 0.4rem;
}
.menu-bar.horizontal .sub-menu:not(:last-child) {
  border-right: 1px solid black;
}
.menu-bar.vertical {
  flex-direction: column;
  height: 100%;
}
.menu-bar.vertical .sub-menu {
  padding: 0.4rem 0.2rem;
  flex-direction: column;
}
.menu-bar.vertical .sub-menu:not(:last-child) {
  border-bottom: 1px solid black;
}