.challenge {
    margin: 0;
    display: grid;
    grid-template: 1fr / 1fr 1fr;
}

.challenge h2 {
    grid-area: 1 / 1 / auto / span 2;
}

@media screen and (max-width: 1280px) {

}

@media screen and (max-width: 980px) {

}

@media screen and (max-width: 736px) {       

}

@media screen and (max-width: 480px) {

}