@media only screen and (max-width: 1139px){  
    .third-main article{
        width: 600px;
        justify-content: center;
    }
}
@media only screen and (max-width: 1056px) {
    .first-header ul{
        order: 1;
        margin: 0px auto;
    }
}
@media only screen and (max-width: 700px){
    main .only{
        padding-left: 30px;
        padding-right: 30px;
    }
    .second_art h2{
        font-size: 6vw;
    }
}
@media only screen and (max-width: 550px) {
    .first-header ul{
        gap: 7px;
    }
    .middle-header article .only h1{
        font-size: 11vw;
    }
    .third-main article{
        width: 300px;
    }
    .sec1 h1{
        font-size: 11vw;
    }
    .sec1{
        padding-top: 90px;
        padding-left: 70px;
    }
    .last-header h1{
        font-size: 11vw;
    }
    .last-header{
        padding-top: 90px;
        padding-left: 70px;
    }
    .in h1{
        font-size: 11vw;
        padding-top: 90px;
        padding-left: 70px;
    }
    .second-header h1{
        font-size: 11vw;
    }
    .second-header{
        padding-top: 90px;
        padding-left: 70px;
    }
}
@media only screen and (max-width: 486px){
    .first-header ul{
        flex-direction: column;
        align-items: start;
        width: 100%;
    }
}