body {
  font-size: 15px;
  font-family: 'Consolas', monospace;
}

input.cc-switch[type=checkbox] {
  border: none;
  background: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  outline: none;
  font-weight: bold;
  cursor: pointer;
  color: blue;
}
input.cc-switch[type=checkbox]:not(:checked):before {
  content: "０";
  font-size: 10px;
  line-height: 10px;
  font-style: normal;
}
input.cc-switch[type=checkbox]:checked:before {
  content: "１";
  font-size: 10px;
  line-height: 10px;
  font-style: normal;
}

.cc-container {
  position: relative;
  display: inline-block;
  width: 10px;
  height: 10px;
  font-size: 0;
  vertical-align: middle;
  overflow: hidden;
}
.cc-container:after {
  content: "０";
  position: absolute;
  height: 10px;
  font-size: 10px;
  line-height: 14px;
  font-style: normal;
}
.cc, .cc-and, .cc-or {
  position: relative;
  display: inline-block;
  max-width: 10px;
  height: 10px;
  overflow: hidden;
}
.cc:after {
  content: "１";
  position: absolute;
  height: 10px;
  font-size: 10px;
  line-height: 14px;
  font-style: normal;
}
.cc-and > *:first-child {
  margin-left: -10px;
}