html, body {
    margin: 0;
    padding: 0;
    line-height: 1;
    font-family: "メイリオ", "Hiragino Kaku Gothic Pro", Meiryo, "ヒラギノ角ゴ Pro W3", "MS PGothic", "MS UI Gothic", Helvetica, Arial, sans-serif;
    background-color: #fff;
}

.wrapper {
    width: 1260px;
    height: 600px;
    margin: auto;
    position: relative;
    overflow: hidden;
}

.video_bg {
    position: absolute;
    z-index: 1;
    top: 22px;
    display: block;
}

.bg {
    position: absolute;
    z-index: 5;
    width: 1260px;
    height: 600px;
    background-image: url("//ap-statics.loas.jp/mm2/platform/images/bg.png");
}

.button {
    position: fixed;
    z-index: 10;
    width: 1260px;
    height: 600px;

}

.video_play {
    position: absolute;
    background-image: url("//ap-statics.loas.jp/mm2/platform/images/video_play_off.png");
    width: 165px;
    height: 141px;
    top: 230px;
    left: 400px;
    cursor: pointer;
}

.video_play:hover {
    background-image: url(//ap-statics.loas.jp/mm2/platform/images/video_play_on.png);
    transition: 0.4s;
    -moz-transition: 0.4s;
    /* Firefox 4 */
    -webkit-transition: 0.4s;
    /* Safari and Chrome */
    -o-transition: 0.4s;
    /* Opera */
}

.video_mask {
    position: absolute;
    z-index: 100;
    width: 1260px;
    height: 600px;
    background-color: #000;
    opacity: 0.75;
    display: none;
}

.video_pop {
    position: absolute;
    width: 930px;
    height: 525px;
    left: 140px;
    top: 30px;
    z-index: 110;
    display: none;
}

.video_pop_close {
    position: absolute;
    width: 40px;
    height: 40px;
    z-index: 120;
    top: 10px;
    left: 1055px;
    background-image: url("//ap-statics.loas.jp/mm2/platform/images/close.png");
    cursor: pointer;
    display: none;
}

.gameStart {
    position: absolute;
    background-image: url("//ap-statics.loas.jp/mm2/platform/images/game_start_off.png");
    width: 190px;
    height: 382px;
    top: 200px;
    left: 815px;
    cursor: pointer;
}

.gameStartPreRelease {
    position: absolute;
    background-image: url("//ap-statics.loas.jp/mm2/platform/images/game_start_pre_release.png");
    width: 190px;
    height: 382px;
    top: 200px;
    left: 815px;
}

.gameStart:hover {
    background-image: url(//ap-statics.loas.jp/mm2/platform/images/game_start_on.png);
    transition: 0.1s;
    -moz-transition: 0.1s;
    /* Firefox 4 */
    -webkit-transition: 0.1s;
    /* Safari and Chrome */
    -o-transition: 0.1s;
    /* Opera */
}

.ltor {
    position: absolute;
    width: 335px;
    height: 150px;
    z-index: 90;
    top: 450px;
    left: -335px;
}

.rtol {
    position: absolute;
    width: 335px;
    height: 150px;
    z-index: 90;
    top: 450px;
    left: 1260px;
}

.game_area_nico {
    width: 1260px;
    height: 633px;
    background-image: url(//ap-statics.loas.jp/mm2/platform/images/platform_bg_200117.jpg);
    background-size: cover;
    position: relative;
    margin: auto;
}

.start_button_nico {
    width: 196px;
    height: 195px;
    position: absolute;
    background-image: url(//ap-statics.loas.jp/mm2/platform/images/platfrom_gamestart_190110_off.png);
    cursor: pointer;
    right: 50px;
    bottom: 350px;
}

.start_button_nico:hover {
    background-image: url(//ap-statics.loas.jp/mm2/platform/images/platfrom_gamestart_190110_on.png);
    transition: 0.4s;
    -moz-transition: 0.4s;
    /* Firefox 4 */
    -webkit-transition: 0.4s;
    /* Safari and Chrome */
    -o-transition: 0.4s;
    /* Opera */
}

.sub_line_nico {
    width: 1260px;
    height: 150px;
    margin: auto;
    position: relative;
    padding-top: 82px;
    background-color: #000;
}

.slider_nico {
    width: 727px;
    height: 272px;
    position: absolute;
    background-image: url(//ap-statics.loas.jp/mm2/platform/images/platfrom_slider_bg_180417.png);
    bottom: 36px;
    left: 36px;
}

.footer {
    margin: auto;
    width: 1260px;
    height: 30px;
    text-align: center;
    padding-top: 10px;
}

.footer_word {
    font-size: 14px;
    color: #000;
    margin-left: 10px;
    margin-right: 10px;
}