首先是html结构，里面的一些小蚊子就不写了，自己可以加
html还是放截图算了，不然提交总是显示系统错误，结构很简单，可以自己写

css部分：

@charset "utf-8";
/* CSS Document */
html,body{margin:0;padding:0; font-family:"微软雅黑"}
a{color:#14191e; text-decoration:none; outline:none;cursor:auto;font: 14px/1.5 "Microsoft Yahei", "Hiragino Sans GB", Helvetica, "Helvetica Neue", "微软雅黑", Tahoma, Arial, sans-serif;}

.g-banner {
    position:relative;
    height:600px;
    overflow:hidden
}
.g-banner .banner-anchor {
    position:absolute;
    top:50%;
    margin-top:-50px;
    width:80px;
    height:100px;
    overflow:hidden;
    opacity:0;
    text-indent:-90em;
    background-image:url(../image/banner_sprite.png);
    background-repeat:no-repeat;
transition:transform .6s, opacity .6s
}
.g-banner .prev {
    left:0;
    transform:translateX(-100%);
    background-position:0 -41px
}
.g-banner .prev:hover, .g-banner .next:hover {
    opacity:1
}
.g-banner .prev:hover {
    background-position:-81px -41px
}
.g-banner .next {
    right:0;
    transform:translateX(100%);
    background-position:0 -142px
}
.g-banner .next:hover {
    background-position:-81px -142px
}
.g-banner:hover .banner-anchor {
    transform:translateX(0);
    opacity:1;
    visibility:visible
}
.g-banner .banner-slide {
    position:absolute;
    display:none;
    left:0;
    right:0;
    top:0;
    bottom:0;
    background-repeat:no-repeat;
    background-position:center 0
}
.g-banner .banner-slide .more {
    position:absolute;
    right:80px;
    top:360px;
    height:14px;
    line-height:14px;
    padding-left:21px;
    font-weight:700;
    background:url(/static/img/index/banner_sprite.png?1) no-repeat -120px 0
}
.g-banner .banner-slide .more:hover {
    color:#14191e;
    opacity:.75;
    filter:alpha(opacity=75)
}
.animated {
    -webkit-animation-duration:1s;
    animation-duration:1s;
    -webkit-animation-fill-mode:both;
    animation-fill-mode:both
}
.animated.infinite {
    -webkit-animation-iteration-count:infinite;
    animation-iteration-count:infinite
}
.animated.hinge {
    -webkit-animation-duration:2s;
    animation-duration:2s
}

.tada {
    -webkit-animation-name:tada;
    animation-name:tada
}
.banner-slide .festival {
    position:absolute;
    top:450px;
    right:75px
}
.banner-slide .festival a {
    display:block;
    width:190px;
    height:120px;
    background:url(/static/img/index/festival.png) no-repeat 0 -120px
}
.banner-slide .festival a:hover {
    background-position:0 0
}
.g-banner .inner {
    position:relative;
    width:1200px;
    margin:0 auto
}
.g-banner .banner-dots {
    position:absolute;
    bottom:30px;
    left:0;
    right:0;
    text-align:center
}
.g-banner .banner-dots span {
    display:inline-block;
    *display:inline;
    *zoom:1;
    width:10px;
    height:10px;
    border-radius:50%;
    margin:0 5px;
    background-color:#0cf;
    transition:transform .2s;
    cursor:pointer
}
.g-banner .banner-dots span:hover {
    transform:scale(1.1)
}
.g-banner .banner-dots span.active {
    background-color:#fff;
    transform:scale(1.1)
}
.g-banner .click-help {
    position:absolute;
    left:0;
    right:0;
    top:0;
    bottom:0
}
.g-banner .banner-tit {
    display:block
}

JS部分：自己需要再引入一个js库

  // 首页轮播图-渐变
        (function(){
            var banner = $('.g-banner'),
                slides = banner.find('.banner-slide'),
                dotContainer = banner.find('.banner-dots'),
                dotTpl = '',
                dots,
                total = slides.length,
                index = -1,
                duration = 500,
                interval = 5000,
                timer = null;

            // 一张图 不执行轮播
            if(total == 1) {
                next();
                return;
            }

            dotTpl = '<span></span>';

            $.each(slides, function(i, el){
                dotContainer.append(dotTpl);
            });

            dots = dotContainer.find('span');

            function show(i){
                var cur = slides.filter('.slide-active');
                slides.stop(true, true);
                cur.removeClass('slide-active').fadeOut(600);
                slides.eq(i).addClass('slide-active').fadeIn(800);
                dots && dots.removeClass('active').eq(i).addClass('active');
            }
            function prev(){
                index--;
                index = index < 0 ? total - 1 : index;
                show(index);
            }

            function next(){
                index++;
                index = index > total - 1 ? 0 : index;
                show(index);
            }

            function autoPlay(){
                if(timer) clearInterval(timer);
                timer = setInterval(function(){
                    next();
                }, interval);
            }

            banner.find('.banner-anchor').removeAttr('style');

            banner.on('click', '.prev', function(e){
                prev();
            }).on('click', '.next', function(e){
                next();
            }).on('click', '.banner-dots span', function(e){
                if($(this).hasClass('active')) return;
                var i = $(this).index();
                index = i;
                show(i);
            });

            banner.on('mouseenter', function(e){
                if(timer) clearInterval(timer);
            }).on('mouseleave', function(e){
                autoPlay();
            });
            next(); 
            autoPlay();
        })();   

以上就是全部代码，这个轮播图可自适应，全屏，自定义大小都是可以的