.history-block {
    border-bottom: 1px solid #ddd;

    display: flex;
    flex-wrap: nowrap;
    justify-content: space-between;
    align-items: flex-start;

    margin-bottom: 10px;
    padding-bottom: 10px;
}

.history-block .history-date {
    font-size: 18px;
    color: #333;

    min-width: 140px;
    padding: 10px;
    text-align: center;

    position: sticky;
    top: 35px;
}

.history-block .changes-list {
    flex: 1;
}

.history-block .changes-list .change-title {
    margin-top: 10px;
    margin-left: 10px;

    font-weight: bold;
    color: #666;
}

.history-block .changes-list .change-info:not(:last-child) {
    border-bottom: 1px solid #eee;
}

.history-block .changes-list .change-info {
    display: flex;

    padding: 10px;
}

.history-block .changes-list .change-info .change-before,
.history-block .changes-list .change-info .change-after {
    width: 50%;
    padding: 0 5px;
}

@media only screen and (max-width: 620px) {
    .history-block {
        flex-wrap: wrap;
        flex-direction: column;
    }

    .history-block .history-date {
        padding: 0;
        min-width: auto;
    }

    .history-block .changes-list .change-title {
        margin: 0;
    }

    .history-block .changes-list .change-info {
        padding: 0;
        flex-wrap: wrap;
    }

    .history-block .changes-list .change-info .change-before,
    .history-block .changes-list .change-info .change-after {
        width: 100%;
    }

    .history-block .change-info div {
        word-break: break-word;
    }
}