.earth-charter-principles {
    grid-template-columns: 25% 25% 25% 25%;
}

.earth-charter-principles .principle {
    border-right: 1px solid #EBEBEB;
    padding: 5rem;
}

.earth-charter-principles .principle.active {
    background-color: #F8F8F8;
}

.earth-charter-principles .principle:last-child {
    border-right: 0;
}

.earth-charter-principles .number {
    text-transform: uppercase;
    color: white;
    background-color: black;
    border-radius: 50%;
    width: 1.8rem;
    height: 1.8rem;
    line-height: 1.8rem;
    text-align: center;
    font-size: .9rem;
    margin: auto;
    padding-top: .15rem;
    transform: translateY(.15rem);
}

.earth-charter-principles h3 {
    max-width: 15rem;
    margin: 1.1rem auto 1rem;
    font-size: .9rem;
    font-weight: 400;
    line-height: 1.56;
    text-align: center;
}

.earth-charter-principles .arrow {
    display: block;
    margin: auto;
    height: .8rem;
    width: auto;
    transition: .3s all;
}

.earth-charter-principles .illustration {
    width: 100%;
    height: auto;
    margin: auto;
    transition: .3s all;
}

.earth-charter-principles a.principle:hover .arrow {

}

.earth-charter-principles a.principle:hover .illustration {
    transform: scale(1.05);
}