.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;
  padding-right: 2rem;
  padding-bottom: 2rem;
}

.C_file {
  cursor: pointer;
  user-select: none;
  padding: 0.5rem;
}

.C_file:hover {
  text-decoration: underline;
}

.C_heading {
  font-size: 2rem;
  font-weight: bold;
  padding-bottom: 1rem;
}