*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

main{
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

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

form{
    display: flex;
    flex-direction: column;
}

.input-group{
    margin-bottom: 15px;
    text-align: left;
}

label{
    margin-bottom: 5px;
    color: #555;
    font-size: 16px;
}

input, select{
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    width: 100%;
}

button{
    padding: 10px;
    margin-top: 10px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}

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

#conversao{
    margin-top: 20px;
    font-size: 18px;
    color: #007bff;
}

@media (max-width: 400px){
    main{
        padding: 15px;
    }
}