.browseItem img
{
    border:solid 1px #ddd;
    
}
.browseItem img:hover
{
    border:solid 1px #000;
    
  filter: grayscale(100%);
  transition: filter 0.3s ease; /* smooth effect */
}
.uc_banner img:nth-child(1)  {width: auto;
  height: auto;
  max-width: 100%;
}
.uc_banner img:nth-child(2)  {width: auto;
  height: auto;
  max-width: 100%;
}