body {
    font-family: Arial, sans-serif;
    background-color: skyblue;
    margin: 0:
    padding: 0;
  }
  
  .container {
    max-width: 500px;
    margin: 200px auto;
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    justify-content: center;
    text-align: center;
    align-items: center;
  }
  
  h1 {
    text-align: center;
  }
  
  .converter {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
  }
  
  .converter input,
  .converter select,
  .converter button {
    margin: 5px;
    padding: 8px;
    border: 3px solid #ccc;
    border-radius: 4px;
  }
  
  .converter input {
    flex-basis: 20%;
  }
  
  .converter select {
    flex-basis: 30%;
  }
  
  .converter button {
    flex-basis: calc(10% - 10px);
    cursor: pointer;
  }
  
  #result {
    font-weight: bold;
    font-size: 20px;
    text-align: center;
    margin-top: 20px;
  }