.shadow{
    text-shadow: 5px 5px 3px grey;
}

.hoakytudau{
    text-transform: capitalize;
    text-align: center;
}

.hoatatca{
    text-transform: uppercase;
    text-align: right;
}

.thuongtatca{
    text-transform: lowercase;
}

.dongcuoi::first-letter{
    font-size:40px;
    font-weight:bold;
}

.dongcuoi::first-line{
    font-weight:bold;
}