.example {
    width: 100%;
    max-width: 1010px;
    height: auto;
    min-height: 662px;
    font-size: 40px;
    text-align: center;
    margin: 0 auto;
    padding-top: 147px;
    box-sizing: border-box;
}
.carousel-item {
    line-height: 470px;
    font-family: "Arial Black", Arial, Helvetica, sans-serif;
}
.ft-carousel {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    box-sizing: border-box;
}

.ft-carousel .carousel-inner {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
}

.ft-carousel .carousel-inner .carousel-item {
    float: left;
    height: 100%;
}

.ft-carousel .carousel-item img {
    width: 100%;
    height: auto;
    display: block; /* 消除图片下方默认空隙 */
}

.ft-carousel .carousel-indicators {
    position: absolute;
    left: 0;
    bottom: 10px;
    width: 100%;
    text-align: center;
    font-size: 0;
}

.ft-carousel .carousel-indicators span {
    display: inline-block;
    width: 12px;
    height: 12px;
    background-color: rgba(255, 255, 255, 0.7);
    margin: 0 4px;
    border-radius: 50%;
    cursor: pointer;
}

.ft-carousel .carousel-indicators span.active {
    background-color: #de3a3a;
}

.ft-carousel .carousel-btn {
    position: absolute;
    top: 50%;
    width: 28px;
    height: 55px;
    margin-top: -27.5px;
    cursor: pointer;
    background-color: rgba(0,0,0,0.3);
    z-index: 10;
}
/* 左右按钮区分，html加上 prev / next class */
.ft-carousel .carousel-btn.prev {
    left: 10px;
}
.ft-carousel .carousel-btn.next {
    right: 10px;
}