#content {
  background-color: white;
}
.agents {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.agents .agent {
  margin: 25px;
  width: 200px;
  height: 200px;
  border-radius: 10%;
  background-size: 100%;
  background-repeat: no-repeat;
  background-position: center;
}
@media only screen and (max-width: 480px) {
  .agents .agent {
    flex-basis: 40%;
    margin: 10px;
  }
}