.img-users {
    width:40px !important;
    height: 40px !important;
}

.img-cursos {
    width:40px !important;
    height: 40px !important;
}

.img-aulas {
    width: 80px !important;
    height: 80px !important;
}

.img-anuncios {
    width: 80px !important;
    height: 80px !important;
}

.img-testimonial {
    width: 50px !important;
    height: 50px !important;
    border-radius: 25px !important;
}