@media screen and (max-width: 767px){
     #menuinsta > div > div > div > li.slick-slide:nth-child(1) > a:before {
     content: "";
     background-image:url(https://cdn.awsli.com.br/1604/1604231/arquivos/003novatarja.jpg)!important;
     }
     #menuinsta > div > div > div > li.slick-slide:nth-child(2) > a:before {
     background-image:url(https://cdn.awsli.com.br/1604/1604231/arquivos/novatarja3.jpg);
     }
     #menuinsta > div > div > div > li.slick-slide:nth-child(3) > a:before {
     background-image:url(https://cdn.awsli.com.br/1604/1604231/arquivos/novatarjanicho.jpg);
     }
     #menuinsta > div > div > div > li.slick-slide:nth-child(4) > a:before {
     background-image:url(https://cdn.awsli.com.br/1604/1604231/arquivos/novatarja4.jpg);
     }
     #menuinsta > div > div > div > li.slick-slide:nth-child(5) > a:before {
     background-image:url(https://cdn.awsli.com.br/1604/1604231/arquivos/novatarja5.jpg);
     }
 }