#app {
  width: 2480px;
  font-family: Avenir, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  margin-top: 60px;
}

.mt5 {
  margin-top: 5px;
}

.mt20 {
  margin-top: 20px;
}

.ml20 {
  margin-left: 20px;
}

.mr10 {
  margin-right: 10px;
}

.mr20 {
  margin-right: 20px;
}