.one-edge-shadow {
  -webkit-box-shadow: 6px 8px 6px -6px black;
  -moz-box-shadow: 6px 8px 6px -6px black;
  /* box-shadow: 6px 8px 6px -6px black;*/
  box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
  transition: 0.3s;
}

* {
  box-sizing: border-box;
}
.row:after {
  content: "";
  display: table;
  clear: both;
}