html,
body {
    max-width: 100%;
    overflow-x: hidden;
}

body {
    /* color: blue;
    background-color: #222; */
    font-family: Arial, Helvetica, serif;
    font-weight: normal;
    margin: 0;
    padding: 0;
    background-color: #121212;
}

h1 {
    background: #333;
    color: #fff;
    text-align: center;
    margin: 0 0 2% 0;
    padding: 0.5em;
}

h3 {
    color: plum;
    font-size: larger;
}

li {
    color: azure;
    font-size: large;
    margin-bottom: 1em;
}

a {
    color: plum;
}

.cardBox {
    float: left;
    font-size: 1.2em;
    margin: 1% 0% 0% 1%;
    perspective: 800px;
    transition: all 0.3s ease 0s;
    width: 30%;
    /* width:23.7% */
}

.cardBox:hover .card {
    transform: rotateY(180deg);
}

.card {

    background: rgba(40, 37, 187, 0.25);

    cursor: default;
    height: 300px;
    transform-style: preserve-3d;
    transition: transform 0.4s ease 0s;
    width: 100%;
    -webkit-animation: giro 1s 1;
    animation: giro 1s 1;
}

.cardScroll {

    cursor: default;
    height: 300px;
    width: 100%;

}

.card p {
    margin-bottom: 1.8em;
}

.card .front,
.card .back {
    backface-visibility: hidden;
    box-sizing: border-box;
    color: white;
    display: block;
    font-size: 1.2em;
    height: 300px;
    padding: 0.8em;
    position: absolute;
    text-align: center;
    width: 100%;
}

.card .front strong {
    background: #fff;
    border-radius: 100%;
    color: #222;
    font-size: 1.5em;
    line-height: 30px;
    padding: 0 7px 4px 6px;
}

.card .back {
    transform: rotateY(180deg);
}

.card .back a {
    padding: 0.3em 0.5em;
    background: #333;
    color: #fff;
    text-decoration: none;
    border-radius: 1px;
    font-size: 0.9em;
    transition: all 0.2s ease 0s;
}

.card .back a:hover {
    background: #fff;
    color: #333;
    text-shadow: 0 0 1px #333;
}

.cardBox:nth-child(1) .card .back {

    background: plum;
}

.cardBox:nth-child(2) .card .back {
    background: plum;
}

.cardBox:nth-child(3) .card .back {
    background: plum;
}

.cardBox:nth-child(2) .card {
    -webkit-animation: giro 1.5s 1;
    animation: giro 1.5s 1;
}

.cardBox:nth-child(3) .card {
    -webkit-animation: giro 2s 1;
    animation: giro 2s 1;
}

.cardBox:nth-child(4) .card {
    -webkit-animation: giro 2.5s 1;
    animation: giro 2.5s 1;
}

@-webkit-keyframes giro {
    from {
        transform: rotateY(180deg);
    }

    to {
        transform: rotateY(0deg);
    }
}

@keyframes giro {
    from {
        transform: rotateY(180deg);
    }

    to {
        transform: rotateY(0deg);
    }
}

@media (max-width: 1250px) {
    .cardBox {
        width: 100%;
    }

    .card .front {
        height: 300px;
        font-size: 0.5em;
    }

}

@media (max-width: 1000px) {
    .cardBox {
        width: 100%;
    }

    .card .front {
        height: 300px;
        font-size: 0.2em;
    }
}