@media (max-width:700px){
    .main{
        .main-section-second{

            .second-content{

                .content-article-project{
                    width: 100%;
                }
            }
        }
    }
}

@media (min-width:701px) and (max-width:1000px){
    .main{
        .main-section-second{
            .second-content .content-article-project{
                width: calc((100% / 2) - 30px);
            }
        }
    }
}