.bg{
  background: url(../img/devTools/bg.jpg) no-repeat center 0px;
  background-position: center 0;
  background-size: cover;
}
.card{
  margin-top: 1rem;
  margin-right: 1rem;
  width: 18rem;
}
.card>img{
  width: 65%;
  height: 65%;
}