JSFiddle - React, Tailwind, and code Playground

HTML

<div id="conatiner">
    <div id="b1" class="block">block 1</div>
    <div id="b2" class="block">block 2</div>
    <div id="b3" class="block">block 3</div>
</div>

CSS

div {
    outline: solid gray 1px;
}

.block {
    display: inline-block;
    width:100px;
    background-color: gray;
}