section.app-list {
  text-align: center;
}

.app {
  max-width: 100%;
  width: 368px;
  display: inline-block;
  box-sizing: border-box;
  margin: 3em;
  margin-bottom: 3em;
}

.app * {
  box-sizing: border-box;
}

.app img {
  max-width: 100%;
  border: 2px solid silver;
  border-radius: 6px;
}

.app.pro img {
  border: 2px solid #46E595;
}

.app h3 {
  margin-top: 1em;
}

.app p {
  min-height: 10em;
}

span.pro {
  background-color: #46E595;
  padding: 0.5em 1em;
  margin: 0.25em;
  margin-top: -0.75em;
  color: white;
  font-weight: bold;
  border-radius: 6px;
  float: right;
}

@media screen and (max-width: 700px) {
  .app {
    margin: 0px;
    margin-bottom: 5em;
  }

  .app p {
    min-height: inherit;
  }
}