br {
  -webkit-user-select: none;
  user-select: none;
}

hr.chr {
  width: 260px;
  margin-left: 0;
}

ul.nnl {
  display: block;
  margin: 0;
}

button {
  appearance: none;
  -webkit-appearance: none;
  background-image: none;
  text-shadow: none;
  box-shadow: none;
  
  background-color: #efefef;
  border: 1px solid #767676;
  border-radius: 2px;
  
  font-family: Arial, sans-serif;
  font-size: 13.3333px;
  color: #000000;

  padding: 1px 5px 2px 5px;
  line-height: normal;
  vertical-align: middle;
}

button:hover {
  background-color: #e5e5e5;
  border-color: #4f4f4f;
}

button:active {
  background-color: #d5d5d5;
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}

button:disabled {
  background-color: light-dark(rgba(239, 239, 239, 0.3), rgba(19, 1, 1, 0.3));
  color: light-dark(rgba(16, 16, 16, 0.3), rgba(255, 255, 255, 0.3));
  border-color: light-dark(rgba(118, 118, 118, 0.3), rgba(195, 195, 195, 0.3));
  cursor: not-allowed;
}


.hd1 {
  font-size: 26px;
  font-weight: bolder;
}

#message {
  border: 1px solid black;
  width: fit-content;
  margin-top: 16px;
  background: #fffffd;
}

#message p {
  margin: 2px 4px;
}

.columns {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
}

.column {
  flex: 0 0 auto;
  width: 260px;
  max-width: 100%;
}

.container {
  margin-bottom: 20px;
}

.container hr {
  margin-top: 4px;
  margin-bottom: 6px;
}