* {
  box-sizing: border-box;
}

body {
  background-color: lightblue;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
}

.btn {
  color: white;
  background-color: black;
  cursor: pointer;
  margin: 20px 0px;
  width: 100%;
  border-radius: 6px;
  outline: none;
  padding: 4px;
  outline: none;
  border: none;
}

.currency {
  padding: 10px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.currency select {
  padding: 10px 20px 10px 10px;
  -moz-appearance: none;
  -webkit-appearance: none;
  appearance: none;
  outline: none;
  border: none;
}

.currency input {
  padding: 10px 20px 10px 10px;
  -moz-appearance: none;
  -webkit-appearance: none;
  appearance: none;
  border-radius: 6px;
  outline: none;
  margin-left: 10px;
  border: none;
}

.swap-rate-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.rate {
  color: black;
  font-size: 14px;
  padding: 0px 10px;
}

button:focus {
  outline: none;
  border: none;
}