JSFiddle - React, Tailwind, and code Playground

HTML

<div class="standardTable">
    <div class="row">
        <div class="th category">
            Kategoria
        </div>
        <div class="th integer">
            Podkategorii
        </div>
        <div class="th integer">
            Wątków
        </div>
        <div class="th lastThreadTitle">
            Ostatni wątek
        </div>
    </div>
    <div class="row">
        <div class="td category">
            Na luzie
        </div>
        <div class="td integer">
            0
        </div>
        <div class="td integer">
            12
        </div>
        <div class="td lastThreadTitle">
            Informatyka dla uczniów i n... 
        </div>
    </div>
</div>

CSS

.standardTable {
    color: #fff;
    font-size: 0px;
}

.standardTable .tr {
    display: block;
    margin-bottom: 5px;
    font-size: 16px;
}

.standardTable .th {
    display: inline-block;
    background-color: #2b5797;
    padding: 10px;
    font-size: 16px;
}

.standardTable .td {
    display: inline-block;
    background-color: #2d89ef;
    padding: 20px;
    font-size: 16px;
}

.standardTable .category {
    width: 512px;
}

.standardTable .integer {
    width: 181px;
    text-align: center;
}

.standardTable .lastThreadTitle {
    width: 326px;
}