@import url("https://fonts.googleapis.com/css?family=Droid+Sans+Mono|Source+Sans+Pro");
html {
    box-sizing: border-box;
}

*,
*::after,
*::before {
    box-sizing: inherit;
}

html,
body {
    height: 100%;
    width: 100%;
}

html {
    font-size: 1em;
}

@media (max-width: 30em) {
    html {
        font-size: 1.125em;
    }
}

body {
    background-image: url("http://subtlepatterns2015.subtlepatterns.netdna-cdn.com/patterns/grey_wash_wall.png");
    font-family: 'Source Sans Pro', sans-serif;
    margin-top: 4rem;
    position: relative;
}

.checkout {
    max-width: 24rem;
    margin-left: auto;
    margin-right: auto;
    background-color: #ECECEE;
    border-radius: .25rem;
    box-shadow: 0 0 8em #373D46;
    min-width: 20rem;
    margin-bottom: -50px;
}

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

.checkout__inner {
    max-width: 20rem;
    margin-left: auto;
    margin-right: auto;
    bottom: 2em;
    position: relative;
}

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

.card {
    border-radius: 1rem;
    color: #ECECEE;
    font-family: 'Droid Sans Mono', monospace;
    height: 12.611rem;
    margin-bottom: 2rem;
    position: relative;
    text-transform: uppercase;
    width: 20rem;
}

.card__front {
    height: 50%;
    padding: .5rem 1.5rem 0;
    position: relative;
    top: 50%;
}

.card__front:before,
.card__front:after {
    content: "";
    bottom: 2rem;
    color: #9EA1A7;
    font-size: .5rem;
    position: absolute;
}

.card__front:before {
    content: "Card Holder";
}

.card__front:after {
    content: "Expires";
    right: 1.5rem;
}

.card__logo {
    background-image: url("https://s32.postimg.org/9g0hrlhyt/visa_logo.png");
    background-position: center center;
    background-repeat: no-repeat;
    background-size: contain;
    height: 2.75rem;
    position: absolute;
    width: 4rem;
    z-index: 3;
}

.card__logo.top-right {
    top: -6rem;
    right: 1rem;
}

.card__logo.bottom-right {
    bottom: .75rem;
    right: 1rem;
}

.card__chip {
    background: url("http://s32.postimg.org/bs9qd2q05/card_chip.png") no-repeat center center;
    background-size: cover;
    height: 3rem;
    left: 1.4rem;
    position: absolute;
    top: -3rem;
    width: 3rem;
}

.card__number {
    font-size: 1.325rem;
    left: 1.5rem;
    letter-spacing: .1rem;
    position: absolute;
}

.card__holder-name {
    bottom: 1rem;
    display: inline-block;
    float: left;
    font-size: .8rem;
    left: 1.5rem;
    max-width: 14rem;
    overflow: hidden;
    position: absolute;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.card__exp {
    bottom: 1rem;
    display: inline-block;
    float: right;
    font-size: .8rem;
    position: absolute;
    right: 1.5rem;
}

.card__strip {
    background-color: #222;
    height: 2rem;
    margin-top: 1.5rem;
    width: 100%;
}

.card__ccv {
    background-color: #fff;
    border-radius: .25rem;
    color: #373D46;
    font-size: .75rem;
    font-style: italic;
    font-weight: 600;
    height: 1.5rem;
    line-height: 1.5rem;
    margin: 1.5rem auto 0;
    max-width: 17rem;
    padding-right: .5rem;
    position: relative;
    text-align: right;
}

.card__ccv:before {
    content: "CCV";
    color: #ECECEE;
    font-size: .5rem;
    font-style: normal;
    font-weight: 400;
    position: absolute;
    right: .5rem;
    top: -1.25rem;
}

.flip {
    -webkit-transition: 250ms ease;
    transition: 250ms ease;
    border-radius: 1rem;
    height: 100%;
    position: absolute;
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
    width: 100%;
box-shadow: 0 5px 20px 5px rgba(1, 25, 45, 0.3);
}

.flip__front,
.flip__back {
    -webkit-transition: 250ms ease;
    transition: 250ms ease;
    background-color: #006299;
    border-radius: 1rem;
    left: 0;
    height: 100%;
    opacity: 0;
    position: absolute;
    top: 0;
    width: 100%;
    visibility: hidden;
    z-index: 1;
}

.flip__front.shown,
.flip__back.shown {
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.flip__back {
    -webkit-transform: rotateY(180deg);
    transform: rotateY(180deg);
}

.footer {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    padding: 1rem;
    background-color: rgba(10, 10, 10, 0.9);
    color: antiquewhite;
    text-align: center;
}

.form {
    padding: 0 1rem;
}

.form > * + * {
    margin-top: 1rem;
}

.form__label {
    display: block;
    font-size: .75rem;
    margin-bottom: .25rem;
    max-width: 8rem;
    text-transform: uppercase;
}

.form__input,
.form__select,
.form__btn {
    background-color: transparent;
    border: 1px solid rgba(158, 161, 167, 0.5);
    border-radius: .25rem;
    font-family: 'Source Sans Pro', sans-serif;
    font-size: 1rem;
    font-weight: 500;
    height: 2rem;
    line-height: normal;
    outline: none;
    margin: 0;
    padding: .25rem;
    appearance: none;
    -moz-appearance: none;
    -webkit-appearance: none;
}

.form__input:active,
.form__input:hover,
.form__input:focus,
.form__select:active,
.form__select:hover,
.form__select:focus,
.form__btn:active,
.form__btn:hover,
.form__btn:focus {
    outline: none;
}

.form__input.small,
.form__select.small {
    float: left;
    display: block;
    margin-right: 2.35765%;
    width: 23.23176%;
}

.form__input.small:last-child,
.form__select.small:last-child {
    margin-right: 0;
}

.form__input.large,
.form__select.large {
    width: 100%;
}

.form__btn.submit {
    width: 100%;
    background-color: #006299;
    box-shadow: 0 2px 4px #9EA1A7;
    color: #ECECEE;
    cursor: pointer;
    height: auto;
    margin-top: 1rem;
    padding: 1rem;
    position: relative;
    text-transform: uppercase;
}

.form__btn i {
    position: relative;
    top: .05rem;
    margin-left: .5rem;
}