@import url(http://fonts.googleapis.com/css?family=Open+Sans:400,700,800);
*, *:before, *:after {
  box-sizing: border-box;
}

.group:after {
  content: "";
  display: table;
  clear: both;
}

html, body {
  height: 100%;
}

body {
  font-family: "Open Sans", sans-serif;
  background: #262626;
  background: radial-gradient(circle at top center, #464646, #000000);
  overflow-x: hidden;
}

.wrap {
  max-width: 400px;
  min-width: 380px;
  margin: 0 auto;
  padding: 80px 10px;
  transform-style: preserve-3d;
}

.cc_images {
  margin-bottom: 5px;
  transform: translateY(20px);
  z-index: 0;
}
.cc_images .card {
  float: left;
  width: 16.666%;
  height: 40px;
  position: relative;
  text-align: center;
  perspective: 500px;
  transform-style: preserve-3d;
  z-index: 50;
  transition: .4s;
}
.cc_images .card.show_cvc .inside {
  transform: rotateY(180deg);
}
.cc_images .card.show_card {
  transform: translateY(-20px);
}
.cc_images .card.show_card .front img, .cc_images .card.show_card .back img {
  opacity: 1;
  -webkit-filter: grayscale(0);
  filter: none;
}
.cc_images .card .inside {
  width: 100%;
  height: 100%;
  display: block;
  transform-style: preserve-3d;
  transition: .4s ease-in-out;
}
.cc_images .card .front, .cc_images .card .back {
  backface-visibility: hidden;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.cc_images .card .front img, .cc_images .card .back img {
  max-width: 100%;
  display: block;
  transition: .3s;
  opacity: .1;
  filter: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='grayscale'><feColorMatrix type='matrix' values='0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0'/></filter></svg>#grayscale");
  /* Firefox 10+, Firefox on Android */
  -webkit-filter: grayscale(100%);
  filter: grayscale(100%);
}
.cc_images .card .back {
  transform: rotateY(-180deg);
}

.input-wrap {
  position: relative;
}
.input-wrap:after {
  position: absolute;
  font-family: "FontAwesome";
  transition: .5s;
  opacity: 0;
}
.input-wrap.valid:after {
  content: "\f00c";
  color: #03B410;
  right: 10px;
  top: 9px;
  font-size: 22px;
  opacity: 1;
}
.input-wrap.error:after {
  content: "\f00d";
  font-size: 20px;
  color: #E43737;
  right: 12px;
  top: 10px;
  opacity: 1;
}

#cc_number {
  margin-bottom: 10px;
}

.expiration-wrap {
  width: 58%;
  margin-right: 2%;
  float: left;
}

.cvc-wrap {
  width: 40%;
  float: left;
}

label {
  position: absolute;
  background: #2c2c2c;
  background-image: linear-gradient(to bottom, #434343, #222);
  border: 1px solid #222;
  color: white;
  height: 40px;
  width: 60px;
  font-size: 20px;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.8);
  text-transform: uppercase;
  padding-top: 8px;
  text-align: center;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), inset 0 -3px 0 0 rgba(0, 0, 0, 0.2);
}

input {
  z-index: 10;
  border: 0;
  height: 40px;
  font-size: 18px;
  padding: 0 5px;
  padding-left: 70px;
  width: 100%;
  border: 1px solid black;
}
input:focus {
  outline: none;
}

.info {
  font-size: 15px;
  line-height: 1.4;
  color: #bbb;
  text-align: center;
  margin-top: 20px;
}
.info small {
  display: block;
  font-size: .85em;
}
.info a {
  color: skyblue;
  text-decoration: none;
}
.info a:hover {
  color: white;
}