* {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

.fullwidthbanner {
    width: 100%;
    overflow: hidden;
    position: relative;
}

.fullwidthbanner ul {
    position: relative;
    width: 100%;
    height: 500px;
}

.fullwidthbanner li {
    position: absolute;
    z-index: 1;
    display: none;
    width: 1000px;
    height: 500px;
    overflow: hidden;
    text-align: center;
    vertical-align: middle;
}

.fullwidthbanner li img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.arrow {
    display: none;
    width: 30px;
    height: 60px;
    position: absolute;
    z-index: 10;
    top: 220px;
}

.al {
    left: 10px;
    background-image: url('../img/left_.png');
    background-repeat: no-repeat;
    background-position: center;
}

.ar {
    right: 10px;
    background-image: url('../img/right_.png');
    background-repeat: no-repeat;
    background-position: center;
}

.bt {
    height: 20px;
    position: absolute;
    z-index: 10;
    top: 470px;
    left: 45%;
    overflow: hidden;
}

.bt span {
    background-color: #c7bf9b;
    display: block;
    float: left;
    margin-left: 3px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    -moz-border-radius: 20px;
    /* Gecko browsers */
    -webkit-border-radius: 20px;
    /* Webkit browsers */
    border-radius: 20px;
    /* W3C syntax */
}