* {margin: 0;padding: 0;}
section#bannerbutton{
    background: #eee;
    width: 100%;
    height: 340px;
    display: block;
    overflow: hidden;
    box-shadow: #ccc 0 0 5px;
    /*margin: 50px auto;*/
}

section#bannerbutton section#buttonsbaixo{
    display: none;
    position: absolute;
    margin: 5px;
    z-index: 500;
}

section#bannerbutton section#buttonsbaixo a{
    background: #FFF;
    width: 30px;
    height: 30px;
    padding: 5px;
    display: inline-block;  
    text-align: center;
    line-height: 20px;
    font:bold 12pt Arial, "Helvetica Neve", Helvetica, sans-serif;
    color: #222;
    text-decoration: none;
    opacity: 0.7;
}
section#bannerbutton section#buttonsbaixo span{
    font: normal 10pt Arial, "Helvetica Neve", Helvetica, sans-serif;
    color: #222;
}
section#bannerbutton section#buttonsbaixo a:hover{
    background: #555;
}
section#bannerbutton ul{
    list-style: none;
    display: table;
    position: relative;
}
section#bannerbutton ul li{
    width: 100%;
    height: 340px;
    display: inline-block;
    position: relative;
}
section#bannerbutton ul li img{
    width: 100%;
    height: 100%;
    background-size: cover;
}
section#bannerbutton ul li span{
    background: #222;
    width: 100%;
    display: table;
    padding: 10px;
    opacity: 0.5;
    position: absolute;
    bottom: 0;
    font: bold 10pt "lucida grande",verdana, sans-serif;
    color: #eee;
    text-align: center;
}