* {
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
}

html, body {
  padding: 20px;
  margin: 0;
  font-family: arial, helvetica, sans-serif;
  font-size: 14px;
}

.container {
  position: relative;
  width: 100%;
  height: auto;
  margin: auto;
  max-width: 768px;
}

#container {
  clear: both;
  margin: auto;
  width: 50%;
  height: 0;
  padding-bottom: 80%;
  border: 1px solid #ccc;
  position: relative;
}

#container div {
  position: absolute;
  width: 100%;
  height: 0;
  left: 0;
  bottom: 0;
  -webkit-transition: ease-in-out 0.5s all;
  -moz-transition: ease-in-out 0.5s all;
  -ms-transition: ease-in-out 0.5s all;
  -o-transition: ease-in-out 0.5s all;
  transition: ease-in-out 0.5s all;
}

#container div p {
  position: absolute;
  text-align: right;
  margin: 0;
  padding: 0;
  width: 60px;
  height: 14px;
  line-height: 14px;
  top: 50%;
  margin-top: -7px;
  left: -80px;
}

#container div p::before {
  content: ' ';
  position: absolute;
  width: 15px;
  height: 2px;
  background-color: black;
  left: 100%;
  margin-left: 5px;
  top: 50%;
  margin-top: -1px;
}

#container .base {
  background-color: #5bc0de;
}

#container .liquid {
  background-color: #1ea8d2;
}

#container .nicotine {
  background-color: #097c9f;
}

#container .flavor {
  background-color: #9cdef2;
}

#container .pg,
#container .vg{
  left: auto;
  right: 0;
  width: 50%;
  border-top: 2px solid black;
  border-left: 2px solid black;
  border-bottom: 2px solid black;
}

#container.pg-vg-mix .pg {
  border-bottom: 1px solid black;
}

#container.pg-vg-mix .vg {
  border-top: 1px solid black;
}

.inputs, .outputs {
  float: left;
  width: 50%;
}

label {
  display: block;
  width: 90%;
  margin-bottom: 10px;
}

input {
  display: block;
  width: 100%;
  margin-top: 5px;
}

h1, h2, h3 {
  float: left;
  width: 100%;
}