style.css

#setup {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: lightgray;
    font-family: sans-serif;
}

#setup #container {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 200px;
    margin-left: -200px;
    margin-top: -100px;
    background-color: white;
    border-radius: 10px;
}

#setup #container h1 {
    text-align: center;
    font-weight: normal;
}

#setup #container p {
    text-align: center;
    color: gray;
    margin-top: 52px;
}

#setup #container select {
    display: block;
    margin: 32px auto 0;
}

#setup #container button {
    display: block;
    margin: 30px auto 0;
}

#presentation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    display: none;
}

#presentation #loading {
    width: 300px;
    height: 200px;
    text-align: center;
    margin: 120px auto auto;
    font-size: 30px;
    color: darkgray;
}

.spacer {
    margin-top: 31px;
}

.smallFont {
    font-size: 20px;
}

.smallerFont {
    font-size: 15px;
}

.slide {
    position: absolute;
    top: 0;
    /*left: 100%;*/
    left: 0;
    margin: 0;
    width: 100%;
    height: 100%;
    background: white;

    /*-webkit-transition: 1s left cubic-bezier(0.01, 0.01, 0.26, 0.84);
    transition: 1s left cubic-bezier(0.01, 0.01, 0.26, 0.84);*/
    -webkit-animation: 1s slide;
}

@-webkit-keyframes slide {
    0% {
        left: 100%;
    }

    100% {
        left: 0;
    }
}

@keyframes slide {
    0% {
        left: 100%;
    }

    100% {
        left: 0;
    }
}

@-webkit-keyframes slideOut {
    0% {
        left: 0
    }

    100% {
        left: -20%;
    }
}

@keyframes slideOut {
    0% {
        left: 0
    }

    100% {
        left: -20%;
    }
}