.projectList__items {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    margin: 0 -15px;
    padding: 0;
    list-style: none;
}

.projectList__item {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
    margin-bottom: 2em;
    padding: 0 15px;
}

@media screen and (min-width: 540px) {
    .projectList__item  {
        width: calc(100% / 2);
    }
}

@media screen and (min-width: 768px) {
    .projectList__item {
        width: calc(100% / 3);
    }
}