#custom {
  font-size: 24px;
  text-align: left;
  margin: 40px auto;
  width: fit-content;
}

#custom input {
  font-family: sans-serif;
  font-size: 24px;
  width: 300px;
  height: 34px;
  margin-bottom: 6px;
  vertical-align: middle;
}

#custom textarea {
  display: block;
  width: 32ch;
  min-width: 120px;
  height: 120px;
  min-height: 120px;
  margin-top: 0px;
  margin-left: 10px;
  margin-bottom: 0px;
  box-sizing: border-box;
  font-family: monospace;
  font-size: 24px;
  padding: 6px 8px;
  border: 1px solid #c0c0c0;
  background: #ffffff;
  text-align: left;
}

#set {
  display: inline-block;
  text-align: left;
  margin-bottom: 20px;
}

#btnbox {
  display: inline-block;
  margin-top: 20px;
  margin-bottom: 20px;
}

.btn {
  font-family: monospace;
  font-size: 24px;
  width: 100px;
  height: 64px;
  margin-right: 32px;
}

.ruler {
  width: max-content;
  box-sizing: border-box;
  font-family: monospace;
  margin: 20px auto;
  font-size: 24px;
  letter-spacing: 0;
  color: #808080;
  padding-left: 1ch;
  text-align: left;
}