.input {
  border-bottom: solid 1px #eee;
  box-sizing: border-box;
  font-size: 3em;
  margin: 8px 0;
  padding: 12px 20px;
  width: 100%;
}

.input:focus {
  outline: none;
}

.usd {
  font-size: 3em;
  margin: 8px 0;
  padding-left: 12px;
}