JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
    <div class="iB"></div>
</div>

CSS

.wrapper {
    width: calc(100%-10px);
    background: red;
    padding: 5px;
}


.iB {
    display:inline-block;
    margin: 2px;
    width: 50px;
    height: 50px;
    background: green;
    padding: 2%;
}