.sidebar img {
  margin-bottom: 0.2em;
  -webkit-box-shadow: 1px 1px 5px 0px rgba(0,0,0,0.75);
  -moz-box-shadow: 1px 1px 5px 0px rgba(0,0,0,0.75);
  box-shadow: 1px 1px 5px 0px rgba(0,0,0,0.75);
}