* {
  margin: 0;
  padding: 0;
}

.clrfix {
  zoom: 1;
}

.clrfix:after {
  content: '';
  display: block;
  height: 0;
  clear: both;
}

.box {
  margin: 120px;
  font-size: 14px;
}

.box .model {
  float: left;
  width: 144px;
  border-top: 2px solid #999;
  position: relative;
  z-index: 2;
}

.start {
  float: left;
  position: relative;
}

.start em {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #999;
  position: absolute;
  top: -7px;
  left: -8px;
}

.start p {
  position: absolute;
  left: -20px;
  top: -38px;
}

.end {
  float: left;
  position: relative;
  width: 120px;
  border-top: 2px solid #ddd;
  z-index: 0;
}

.end em {
  position: absolute;
  top: -12px;
  right: 0;
}

.add {
  width: 20px;
  height: 20px;
  border: 2px solid #ddd;
  border-radius: 50%;
  background: #fff;
  cursor: pointer;
}

.add:after {
  content: '';
  position: absolute;
  width: 12px;
  height: 2px;
  background: #ddd;
  top: 50%;
  margin-top: -1px;
  left: 50%;
  margin-left: -6px;
}

.add:before {
  content: '';
  position: absolute;
  width: 2px;
  height: 12px;
  background: #ddd;
  top: 50%;
  margin-top: -6px;
  left: 50%;
  margin-left: -1px;
}

.model small {
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid #999;
  right: -2px;
  background: #fff;
  border-radius: 50%;
  margin-top: -12px;
  cursor: pointer;
}

.model>p {
  position: absolute;
  width: 144px;
  text-align: center;
  left: 50%;
  margin-left: -12px;
  top: -38px;
}

.model .already:first-of-type {
  height: 70px;
  margin-top: 10px;
}

.already {
  width: 120px;
  position: relative;
  height: 92px;
  margin-top: -22px;
  border: 2px solid #999;
  left: 72px;
  border-top: 0;
  border-radius: 0 0 20px 20px;
}

.model .already:first-of-type:after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #999;
  border-color: transparent #999 transparent transparent;
  transform: rotate(-45deg);
  top: -12px;
  left: -24px;
}

.model .already:first-of-type:before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #999;
  border-color: transparent #999 transparent transparent;
  transform: rotate(-135deg);
  top: -12px;
  right: -24px;
}

.model .already:first-of-type p {
  padding-top: 12px;
}

.already p {
  text-align: center;
  padding-top: 42px
}

.already span {
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid #999;
  bottom: -12px;
  left: 50%;
  margin-left: -12px;
  background: #fff;
  border-radius: 50%;
  cursor: pointer;
  z-index: 2;
}

.already span.active,
.model small.active {
  border-color: #00a6fb;
}

.already span.active:before,
.model small.active:before {
  content: '';
  width: 14px;
  height: 14px;
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  background: #00a6fb;
  transform: translate(-50%, -50%);
}

.add-model {
  width: 60px;
  height: 84px;
  position: relative;
  left: 72px;
  border: 2px solid #ddd;
  top: -14px;
  border-color: transparent transparent #ddd #ddd;
  border-radius: 0 0 0 20px;
}

.add-model span {
  position: absolute;
  bottom: -12px;
  right: -12px;
}

.add-model p {
  width: 120px;
  text-align: center;
  padding-top: 32px
}

.new-add.add-model {
  height: 68px;
  top: 10px;
}

.new-add.add-model:before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #ddd;
  border-color: transparent #ddd transparent transparent;
  transform: rotate(-45deg);
  top: -13px;
  left: -24px;
}

.new-add.add-model p {
  padding-top: 10px;
}