header{

    width:100%;

}


.nav-row {

    display: flex;

    flex-wrap: wrap;

    align-items: center;

    gap: 30px;

    background: #161b22;

    padding: 18px 40px;

    border-bottom: 1px solid #30363d;

}

@media (max-width: 700px) {

    .nav-row {

        flex-wrap: wrap;

        gap: 12px;

        padding: 16px 20px;

    }

    .categoria {

        width: 100%;

        margin-bottom: 6px;

    }

}


.categoria{

    font-weight:bold;

    color:#e6edf3;

    min-width:250px;

}

.aulas-grid img {

    display: block;

    width: 100%;

    max-width: 800px;

    height: auto;

    margin: 40px auto;

}