* { box-sizing:border-box; }

/* basic stylings ------------------------------------------ */
.container      { 
  font-family:'Roboto';
  width:600px; 
  margin:30px auto 0; 
  display:block; 
  background:#FFF;
  padding:10px 50px 50px;
}
h2       { 
  text-align:center; 
  margin-bottom:50px; 
}
h2 small { 
  font-weight:normal; 
  color:#888; 
  display:block; 
}
.footer     { text-align:center; }
.footer a  { color:#53B2C8; }

/* form starting stylings ------------------------------- */
.group            { 
  position:relative; 
  margin:auto;
  margin-bottom:45px; 
  width:50%;
}
@media all and (max-width: 949px) and (min-width: 50px) {
  .group {
    width:90%;
  }
}
input               {
  font-size:inherit;
  padding:10px 10px 10px 5px;
  display:block;
  /*width:300px;*/
  width:100%;
  border:none;
  border-bottom:1px solid #757575;
  border-radius:6px;
}
input:focus         { outline:none; }

/* LABEL ======================================= */
label                {
  color:#999; 
  font-size:16px;
  font-weight:normal;
  position:absolute;
  pointer-events:none;
  left:5px;
  top:10px;
  transition:0.2s ease all; 
  -moz-transition:0.2s ease all; 
  -webkit-transition:0.2s ease all;
}

/* active state */
input:focus ~ label, input:valid ~ label        {
  top:-20px;
  font-size:14px;
  color: #000000;
}

.code_label { font-size:3vmax;padding-left:10px; }

@media all and (max-width: 650px) and (min-width: 50px) { 
  .code_label {
    font-size:4vmax;
  }
}

input:focus ~ .code_label, input:valid ~ .code_label {
  z-index: -1;
}

/* BOTTOM BARS ================================= */
.bar    { position:relative; display:block; /*width:300px;*/ width:100%; }
.bar:before, .bar:after     {
  content:'';
  height:2px; 
  width:0;
  bottom:1px; 
  position:absolute;
  background-color:#000000; 
  transition:0.2s ease all; 
  -moz-transition:0.2s ease all; 
  -webkit-transition:0.2s ease all;
}
.bar:before {
  left:50%;
}
.bar:after {
  right:50%; 
}

/* active state */
input:focus ~ .bar:before, input:focus ~ .bar:after {
  width:50%;
}

/* HIGHLIGHTER ================================== */
.highlight {
  position:absolute;
  height:60%; 
  width:0px; 
  top:25%; 
  left:0;
  pointer-events:none;
  opacity:0.5;
}

/* active state */
input:focus ~ .highlight {
  -webkit-animation:inputHighlighter 0.3s ease;
  -moz-animation:inputHighlighter 0.3s ease;
  animation:inputHighlighter 0.3s ease;
}

/* ANIMATIONS ================ */
@-webkit-keyframes inputHighlighter {
    from { background:#FFFFFF; }
  to    { width:0; background:transparent; }
}
@-moz-keyframes inputHighlighter {
    from { background:#FFFFFF; }
  to    { width:0; background:transparent; }
}
@keyframes inputHighlighter {
    from { background:#FFFFFF; }
  to    { width:0; background:transparent; }
}