.banner {
    position: relative;
    top: 0;
	width: 100%;
	height: calc(100vw * (500 / 1920));
}

.banner .move {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.move ul,
.move ul li {
	width: 100%;
	height: 100%;
    position: absolute;
}
.banner ul li img {
	display: block;
	width: 100%;
	height: 100%;
}

.ctrl {
	display: none;
}

/* html去掉文字蓝色选中效果 */
.ctrl ::selection {
	background: transparent;
}

.ctrl ::-moz-selection {
	background: transparent;
}

.ctrl ::-webkit-selection {
	background: transparent;
}

.ctrl {
    position: absolute;
    width: 100%;
    bottom: -30px;
    text-align: center;
}

.ctrl .libs {
    display: inline-block;
    margin-left: 10px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #333;
    z-index: 50;
    cursor: pointer;
}

.ctrl span.active {
    background-color: #fff;
}

.ctrl .arrow {
    display: block;
    position: absolute;
    width: 30px;
    height: 60px;
    top: 50%;
    margin-top: -30px;
    background-color: #333;
    cursor: pointer;
	font: 30px/58px "仿宋体";
    opacity: .5;
    color: #fff;
    text-align: center;
	top: calc(-100vw * (500 / 1920) * 0.5);
	transform: translate(0, -50%);
}

.ctrl .next {
    /* top: -140px; */
    right: 0;
}

.ctrl .prev {
    /* top: -140px; */
    left: 0;
}

.ctrl .arrow:hover {
    opacity: 1;
}