* {
    margin: 0;
    padding: 0;
    list-style: none;
    border: 0;
}

.container {
    margin: 50px auto;
    max-width: 1200px;
}

.poster-main {
    position: relative;
    width: 1200px;
    height: 270px;
}

    .poster-main a, .poster-main img {
        display: block;
    }

    .poster-main .poster-list {
        width: 1200px;
        height: 270px;
    }

        .poster-main .poster-list .poster-item {
            position: absolute;
            left: 0;
            top: 0;
        }

    .poster-main .poster-btn {
        position: absolute;
        top: 0;
        width: 32px;
        height: 88px;
        z-index: 10;
        cursor: pointer;
        opacity: 1
    }

    .poster-main .poster-prev-btn {
        left: -104px;
        background: url(../Image/leftico.png) no-repeat center center;
    }

    .poster-main .poster-next-btn {
        right: -104px;
        background: url(../Image/rightico.png) no-repeat center center;
    }