box.css

#distributor-list .distributor {
    margin: 10px;
    border-radius: 10px;
    width: 30%;
    min-width: 250px;
}
.d-inline-block {
    display: inline-block!important;
}
.card {
    position: relative;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-direction: column;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid rgba(0,0,0,.125);
    border-radius: .25rem;
}
*, ::after, ::before {
    box-sizing: border-box;

container.css

.justify-content-center {
    -ms-flex-pack: center!important;
    justify-content: center!important;
}
.flex-wrap {
    -ms-flex-wrap: wrap!important;
    flex-wrap: wrap!important;
}
.d-inline-flex {
    display: -ms-inline-flexbox!important;
    display: inline-flex!important;
}
*, ::after, ::before {
    box-sizing: border-box;