.C_main {
  margin: 0;
  padding: 0;
  border: 0;
  box-sizing: border-box;
  color: inherit;
  scroll-behavior: smooth;
  border-spacing: 0;
  border-collapse: separate;
}

.C_main {
  display: flex;
  flex-flow: column nowrap;
}
.C_sub {
  display: flex;
  flex-flow: row nowrap;
  justify-content: stretch;
}
@media only screen and (orientation: portrait) {
  .C_sub {
    flex-flow: column nowrap;
  }
}

.C_render {
  flex-grow: 1;
  flex-shrink: 1;
}

.C_files {
  flex-grow: 0;
  flex-shrink: 0;
}

.C_report_list {
  display: flex;
  flex-flow: column nowrap;
}