.contentHeader {
    text-align: center;
}

.coinButton {
    width: 30%
}

.coinContainer {
    display: inline-block;
    width: 48%;
    margin: 0.5%;
    margin-bottom: 10%;
    text-align: center;
    font-size: larger;
}

.coinFlipGIF {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 25%;
}

#tails {
    display: none;
}

#heads {
    display: none;
}

#contentUnderHeader {
    display: block;
    visibility: hidden;
    text-align: center;
    width: 100%;
}