body {
    padding: 20px;
}
#result {
    display: none;
}
#pinyinDisplay {
    font-size: 4rem;
    font-weight: bold;
}
#chineseCharacter {
    font-size: 3rem;
}
.row {
    margin-bottom: 10px;
}
.col {
    display: inline-flex;
    margin-right: 10px;
}