JSFiddle - React, Tailwind, and code Playground

by Ian Roberts

HTML

<ul>   
            <li>1</li>   
            <li>2</li>
            <li>3</li>
            <li>4</li>
            <li>5</li>
            <li>6</li>
            <li>7</li>
            <li>8</li>
            <li>9</li>
            <li>10</li>
            <li>11</li>
            <li>12</li>
            <li>13</li>
            <li>14</li>
            <li>15</li>
            <li>16</li>
            <li>17</li>
            <li>18</li>
            <li>19</li>
            <li>20</li>
            <li>21</li>
            <li>22</li>
            <li>23</li>
            <li>24</li>
            <li>25</li>
            <li>26</li>
            <li>27</li>
            <li>28</li>
            <li>29</li>
            <li>30</li>
            <li>31</li>
            <li>32</li>
            <li>33</li>
            <li>34</li>
            <li>35</li>
            <li>36</li>
            <li>37</li>
            <li>38</li>
            <li>39</li>
            <li>40</li>
        </ul>

CSS

*{float:left}
.clear{
    clear:both;
    color: Red;
}

JavaScript

//adds a clear to every 5th child +1 to get the clear to return on every 6th
$(function(){
    var ul = $("ul");
    //ul.find(":nth-child(4n-3)").addClass("clear");
    ul.find(":nth-child(5n+1)").addClass("clear");
});