mybuddy/core/static_src/scss/core.scss

#view-core\:child {
    .child-photo {
        max-width: 150px;
    }
}

#view-core\:child-list {
    .picture-column {
        text-align: center;
        width: 65px;
        min-width: 65px;
    }

    .child-list {
        th,
        td {
            vertical-align: middle;
        }
    }
}

@include media-breakpoint-up(md) {
    #view-core\:child {
        .child-detail-column {
            position: fixed;
            width: 100%;
        }
    }
}