JSFiddle - React, Tailwind, and code Playground

by 3rror404

HTML

<div class="has_tab">Lorem ipsum</div>
<div class="has_tab">Lorem ipsum</div>
<div class="has_tab">Lorem ipsum</div>

CSS

.has_tab {
    border: 1px solid #e6e6e6;
    border-left: none;
    width: 33.33%;
    height: 300px;
    box-sizing: border-box;
    display: block;
    float: left;
    position: relative;
    text-align: center;
}

.has_tab:first-child {
    border-left: 1px solid #e6e6e6;
}

/* the important bit... */
.has_tab:after {
    content: "";
    display: block;
    width: 10px;
    height: 100px;
    background: #FFF;
    border: 1px solid #e6e6e6;
    border-left: none;
    border-radius: 0 20px 20px 0;
    position: absolute;
    top: 50%;
    margin-top: -50px;
    right: -11px;
}

.has_tab:last-of-type:after {
    display: none;
}