@media(max-width: 767px){
    .ban-con h1{
        font-size: 45px;line-height: 68px;
    }
    .ban-con p{
        font-size: 20px;
    }
    .copy-part{
        flex-wrap: wrap;
        gap: 15px;justify-content: center;
    }
    .copy-part p{
        text-align: center;
    }
}
@media(max-width: 479px){
    .chatbox{
        width: 300px;
    }
    .chat{
        right: auto;
        left: 50%;
        transform: translate(-50%,0);
        top: 15px;
    }
}