#message strong{
    color: #24a777;
}
#message span{
    color: #cb4e4e;
    font-weight: 700;
}
.calc{
  position: relative;
} 
.cards{
    text-align: center;
    margin: 0 auto;
    width: 460px;
    height: 175px;
    position: relative;
}
.cards li,
.cards div{
    width: 120px;
    height: 173px;
}
.cards li{
    position: absolute;
    top: 0;
    list-style: none;
    -webkit-transition: all 400ms ease-out;
    -moz-transition: all 400ms ease-out;
    -o-transition: all 400ms ease-out;
    transition: all 400ms ease-out;
    outline: 3px solid #ccc;
    -webkit-perspective: 1000;
    -moz-perspective: 1000;
    -ms-perspective: 1000;
    perspective: 1000;
    -ms-transform: perspective(1000px);
    -moz-transform: perspective(1000px);
    -moz-transform-style: preserve-3d;
    -ms-transform-style: preserve-3d;
}
.cards.hidden .fliper{
    transform: rotateY(180deg);
}
.cards div{
    background-position: center center;
    background-repeat: no-repeat;
}
.cards .fliper{
    -webkit-transition: 0.6s;
    -webkit-transform-style: preserve-3d;
    -ms-transition: 0.6s;
    -moz-transition: 0.6s;
    -moz-transform: perspective(1000px);
    -moz-transform-style: preserve-3d;
    -ms-transform-style: preserve-3d;
    transition: 0.6s;
    transform-style: preserve-3d;
    position: relative;
    cursor: pointer;
}
.cards.nopointer .fliper{
    cursor: default;
}
.cards .front, 
.cards .back {
	-webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -ms-backface-visibility: hidden;
    backface-visibility: hidden;
    -webkit-transition: 0.6s;
    -webkit-transform-style: preserve-3d;
    -webkit-transform: rotateY(0deg);
    -moz-transition: 0.6s;
    -moz-transform-style: preserve-3d;
    -moz-transform: rotateY(0deg);
    -o-transition: 0.6s;
    -o-transform-style: preserve-3d;
    -o-transform: rotateY(0deg);
    -ms-transition: 0.6s;
    -ms-transform-style: preserve-3d;
    -ms-transform: rotateY(0deg);
    transition: 0.6s;
    transform-style: preserve-3d;
    transform: rotateY(0deg);
    position: absolute;
    top: 0;
    left: 0;
}
.cards .front {
    transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
    -ms-transform: rotateY(0deg);
    z-index: 2;
}

/* back, initially hidden pane */
.cards .back {
    -webkit-transform: rotateY(-180deg);
    -moz-transform: rotateY(-180deg);
    -o-transform: rotateY(-180deg);
    -ms-transform: rotateY(-180deg);
    transform: rotateY(-180deg);
    background-image: url("imgs/back_big.png");
}

.first .cards li{
    -webkit-transition: all 400ms ease-out;
    -moz-transition: all 400ms ease-out;
    -o-transition: all 400ms ease-out;
    transition: all 400ms ease-out;
}
.second .cards li{
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
}
.third .cards li{
    -webkit-transition: all 200ms ease-out;
    -moz-transition: all 200ms ease-out;
    -o-transition: all 200ms ease-out;
    transition: all 200ms ease-out;
}
.one{
  left: 0;
}
.two{
  left: 170px;
}
.three{
  left: 340px;
}
#one .front{
    background-image: url("imgs/five_big.png");
}
#two .front{
    background-image: url("imgs/papa_big.png");
}
#three .front{
    background-image: url("imgs/ten_big.png");
}
#level{
    padding: 1px 5px;
}    

@media all and (max-width: 540px){
    .cards{
        height: 115px;
        margin: 0 auto;
        width: 260px;
    }
    .cards li,
    .cards div{
        width: 80px;
        height: 115px;
    }
    .cards li{
        outline: 1px solid #ccc;
    }
    .cards .back{
        background-image: url(imgs/back_sm.png);
    }
    .two {
        left: 90px;
    }
    .three {
        left: 180px;
    }
    #one .front {
        background-image: url(imgs/five_sm.png);
    }
    #two .front {
        background-image: url(imgs/papa_sm.png);
    }
    #three .front {
        background-image: url(imgs/ten_sm.png);
    }

}