* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #222;
}

.container {
    width: 300px;
    padding: 20px;
    background-color: #ffffff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    border-radius: 10px;
    text-align: center;

}

h1 {
    margin-bottom: 20px;
    color: #333;
}

.converter label {
    display: block;
    text-align: left;
    margin-bottom: 5px;
    font-weight: bold;
    color: #555;
}

.converter input,
.converter select {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    background-color: #0056b3;
}

.result {
    margin-top: 15px;
    font-size: 1.2em;
    color: #333;
}

.error{
    color: red;
    font-weight: bold;
}