body {
    font-family: Helvetica;
    padding:0;
    margin: 0;
    background: rgb(187,2,95);
    background: linear-gradient(90deg, rgba(187,2,95,1) 0%, rgba(119,21,60,1) 100%);
    color: #fff;
}
h1 {
    color: #fff;
    text-transform: uppercase;
    text-align: center;
}
.content {
    
    text-align: center;
    padding: 20px 0;
}
.container {
    max-width: 610px;
    margin: 0 auto;
    padding: 0 20px;
}
@media only screen and (max-width: 600px) {
    .container {
        max-width: 400px;
    }
}
.canvas-holder {
    position: relative;
}
#canvas, #canvas2 {
    border-radius: 4px;
    position: relative;
    max-width: 100%;
}
button {
    background: #fff;
    color: purple;
    border: none;
    font-size: 16px;
    padding: 10px 30px;
    border-radius: 4px;
    font-weight: bold;
    text-transform: uppercase;
}
.button-line {
    margin: 20px 0;
}
.my-1 {
    margin: 2rem 0;
}
.mt-1 {
    margin-top: 2rem;
}

.img-list {
    text-align: right;
}

.img-list img {
    border: 4px solid transparent;
    cursor: pointer;
    width: calc(100% / 3 - 20px);
    margin: 6px;
}
@media only screen and (max-width: 600px){
    .img-list {
        text-align: center;
    }
}
.img-list img.selected {
    border-color:#fff;
    border-radius: 4px;
}
.flip-card {
    background-color: transparent;
    perspective: 1000px;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}

.flip-card.game-over > .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card.game-over > .flip-card-inner > .flip-card-back {
    position: relative;
}

.flip-card.game-over > .flip-card-inner > .flip-card-front {
    display: none;
}

.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.flip-card-front {
    background-color: transparent;
    color: black;
}

.flip-card-back {
    transform: rotateY(180deg);
}
.flip-card-back img {
    width: 100%;
}
.playui {
    background-color: rgba(0,0,0,0.2);
    padding: 20px;
    text-align: center;
}
#time {
    font-weight: bold;
    font-size: 30px;
}
.customrow {
    display: flex;
    margin: 20px 0;
}
.customrow > div {
    width: 50%;
}
@media only screen and (max-width: 600px){
    .customrow {
        flex-flow: column;
    }
    .customrow > div {
        width: 100%;
    }
    #time {
        font-size: 20px;
    }
}
.align-items-center {
    align-items: center;
}
.text-left {
    text-align: left;
}
.text-right {
    text-align: right;
}
#selectedBigImage {
    border: 4px solid #fff;
    border-radius: 4px;
    width: 100%;
}
#canvas2 {
    cursor: pointer;
}