owl-blogs/web/static/style.css

.action-tile-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
} 

.action-tile {
    border: 1px solid var(--background-dark);
    padding: 20px;
    flex: 1 1 0px;
    margin: 6px;
    min-width: 20%;
    text-align: center;
    background: var(--background);
    border-radius: 4px;
}

.action-tile:hover {
    background: var(--background-light);
}

.danger {
    background-color: var(--del-color) !important;
}

.drop-file {
    background: #a2dbff;
    border-style: dashed;
    border-width: 4px;
    border-color: #5391ff;
}