.slidercontainer{height:350px;}
.slider {overflow: hidden; 	position: relative; height:350px;}
.slider ul.slider_liste li { font-size: 0; width: 100%; float: left; }
.slider ul.slider_liste li a img { min-width: 100%; max-height:100%; }
.slider a.onceki, a.sonraki { width: 70px; height: 70px; text-decoration: none; font: 32px/70px Arial; color: #fff; border-radius: 100px; position: absolute; bottom: 5%; margin-top: -35px; background: rgba(0, 0, 0, .5); text-align: center; }
.slider a.onceki { left: 20px; }
.slider a.sonraki { right: 20px; }
.slider a.onceki:hover, .slider a.sonraki:hover{ background: #000; }