.banners ul {
   list-style: none;
}
.banners ul li {
   text-align: center;
   margin-bottom:5px;
}
.banners .item-bg{
   border-radius: 5px;
   max-width: 265px;
   margin: 5px auto 15px;
}

.banners li img {
   max-width: 265px;
}