* {
  box-sizing: border-box;
}

body {
  font-family:
    "Lucida Sans", "Lucida Sans Regular", "Lucida Grande",
    "Lucida Sans Unicode", Geneva, Verdana, sans-serif;
  font-weight: bold;
  background-color: rgb(7, 153, 179);

  margin: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 24px 12px;
}

.container {
  background-color: rgb(255, 255, 255);
  padding: 20px;
  border-radius: 12px;

  width: min(680px, 92%);
}

.container h1 {
  color: rgb(51, 77, 121);
  font-size: clamp(22px, 3vw, 32px);
  margin: 0 0 22px;
  text-align: center;
}

.converter {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.col {
  text-align: center;
  flex: 1 1 180px;
  max-width: 220px;
}

.col label {
  font-size: clamp(14px, 2vw, 18px);
  display: block;
  margin-bottom: 8px;
}

.col input {
  width: 100%;
  height: 42px;
  font-size: clamp(14px, 2vw, 18px);
  border-radius: 8px;
  text-align: center;
  border: 2px solid rgba(0, 0, 0, 0.15);
  outline: none;
}

.col input:focus {
  border-color: rgb(51, 77, 121);
}