#galleryOverlay {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    opacity: 0;
    z-index: 100000;
    background-color: #222;
    background-color: rgba(0,0,0,0.8);
    overflow: hidden;
    display: none;
    -moz-transition: opacity 1s ease;
    -webkit-transition: opacity 1s ease;
    transition: opacity 1s ease;
}

    #galleryOverlay.visible {
        opacity: 1;
    }

#gallerySlider {
    height: 100%;
    left: 0;
    top: 0;
    width: 100%;
    white-space: nowrap;
    position: absolute;
    -moz-transition: left 0.4s ease;
    -webkit-transition: left 0.4s ease;
    transition: left 0.4s ease;
}

    #gallerySlider .placeholder {
        background: url("../images/preloader.html") no-repeat center center;
        height: 100%;
        line-height: 1px;
        text-align: center;
        width: 100%;
        display: inline-block;
    }

        #gallerySlider .placeholder:before {
            content: "";
            display: inline-block;
            height: 50%;
            width: 1px;
            margin-right: -1px;
        }

        #gallerySlider .placeholder .iframe-wrap, #gallerySlider .placeholder img {
            display: inline-block;
            max-height: 100%;
            max-width: 100%;
            vertical-align: middle;
        }

        #gallerySlider .placeholder .iframe-wrap {
            width: 1280px;
        }

            #gallerySlider .placeholder .iframe-wrap .iframe {
                position: relative;
                width: 100%;
                padding-bottom: 56.25%;
            }

                #gallerySlider .placeholder .iframe-wrap .iframe iframe {
                    position: absolute;
                    top: 0;
                    left: 0;
                    width: 100%;
                    height: 100%;
                }

    #gallerySlider.rightSpring {
        -moz-animation: rightSpring 0.3s;
        -webkit-animation: rightSpring 0.3s;
    }

    #gallerySlider.leftSpring {
        -moz-animation: leftSpring 0.3s;
        -webkit-animation: leftSpring 0.3s;
    }

@-moz-keyframes rightSpring {
    0% {
        margin-left: 0px;
    }

    50% {
        margin-left: -30px;
    }

    100% {
        margin-left: 0px;
    }
}

@-moz-keyframes leftSpring {
    0% {
        margin-left: 0px;
    }

    50% {
        margin-left: 30px;
    }

    100% {
        margin-left: 0px;
    }
}

@-webkit-keyframes rightSpring {
    0% {
        margin-left: 0px;
    }

    50% {
        margin-left: -30px;
    }

    100% {
        margin-left: 0px;
    }
}

@-webkit-keyframes leftSpring {
    0% {
        margin-left: 0px;
    }

    50% {
        margin-left: 30px;
    }

    100% {
        margin-left: 0px;
    }
}

#prevArrow, #nextArrow {
    border: none;
    text-decoration: none;
    background: url("../images/arrows.html") no-repeat;
    opacity: 0.5;
    cursor: pointer;
    position: absolute;
    width: 43px;
    height: 58px;
    top: 50%;
    margin-top: -29px;
    -moz-transition: opacity 0.2s ease;
    -webkit-transition: opacity 0.2s ease;
    transition: opacity 0.2s ease;
}

    #prevArrow:hover, #nextArrow:hover {
        opacity: 1;
    }

#prevArrow {
    background-position: left top;
    left: 40px;
}

#nextArrow {
    background-position: right top;
    right: 40px;
}