JSFiddle - React, Tailwind, and code Playground

HTML

<div class="flow">
    <div class="flow2">
        <div class="block"></div>
        <div class="block"></div>
        <div class="block"></div>
        <div class="block"></div>
        <div class="block"></div>
    </div>
</div>

CSS

.flow {
    display: flex;
    justify-content: center;
    width: 100%;
}

.flow2 {
    display: flex;
    flex-wrap: wrap;
}

.block {
    width: 300px;
    height: 66px;
    margin-right: 15px;
    margin-left: 15px;
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(0, 0, 0, 0.4);
    border-radius: 5px;
    margin-bottom: 10px;
}