.flex_row, .C_controls {
  display: flex;
  flex-flow: row nowrap;
}

.flex_col, .C_image, .C_main {
  display: flex;
  flex-flow: column nowrap;
}

.fill, .C_main {
  width: 100%;
  height: 100%;
}

.C_main {
  padding: 0.5rem;
}

.C_image {
  width: 100%;
}
.C_image_holder {
  display: flex;
  flex-flow: column nowrap;
}

.C_controls {
  flex-wrap: wrap;
}