From Meta, a Wikimedia project coordination wiki
@media (max-width: 758px) {
.aca-button {
margin:2px;
}
.buttons-start {
display:flex;
flex-direction:row;
flex-wrap:wrap
}
}
@media (min-width: 858px) {
.aca-button {
width:20%;
}
.buttons-start {
width: 100%;
}
}