*{margin:0;padding:0;}

img{    image-rendering: -moz-crisp-edges; /* Firefox */
    image-rendering: -o-crisp-edges; /* Opera */
    image-rendering: -webkit-optimize-contrast; /* Webkit (non-standard naming) */
    image-rendering: crisp-edges;    -ms-interpolation-mode: nearest-neighbor; /* IE (non-standard property) */}


img.contentbann{width:100%;}