ul.top-bn{
  display:flex;
  flex-wrap:wrap;
  list-style-type:none;
  width:100%;
  margin-left:0;
}
ul.top-bn li{
  overflow:hidden;
  border:solid 1px #aaa;
  box-sizing:border-box;
}
@media screen and (min-width:769px){
  ul.top-bn li img{
    -moz-transition: -moz-transform 0.15s linear;
    -webkit-transition: -webkit-transform 0.15s linear;
    -o-transition: -o-transform 0.15s linear;
    -ms-transition: -ms-transform 0.15s linear;
    transition: transform 0.15s linear;
  }
  ul.top-bn li img:hover{
    -webkit-transform: scale(1.15);
    -moz-transform: scale(1.15);
    -o-transform: scale(1.15);
    -ms-transform: scale(1.15);
    transform: scale(1.15);
  }
}