.course-buttons-row,
.course-buttons-col {
    display: flex;
    box-sizing: border-box;
}

.course-buttons-row {
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
}

.course-buttons-col {
    flex-direction: column;
    flex: 1;
    justify-content: center;
    align-items: center;
}

@media screen and (max-width: 980px) {
    .course-buttons-col {
        flex: initial;
        width: 100%;
    }
}