#content {
  margin-top: 60px;
}

#content a {
  color: #407EE3;
  text-decoration: none;
}

#content .why-box {
  display: inline-block;
  vertical-align: top;
  max-width: 350px;
  height: 200px;
  margin-right: 20px;
  margin-bottom: 20px;
}

@media (max-width: 550px) {
    #content .why-box {
        display: block;
        text-align: center;
        margin: 20px 20px 0 20px;
        height: auto;
    }
}