JSFiddle - React, Tailwind, and code Playground

HTML

<div class="views-row">
<div class="field-group-format-toggler-abstract">+</div>
<h2>Title 1</h2>
<div class="field-group-format-wrapper">
Dolor minim neque pala ratis sit. Ideo odio praesent. Aliquam capto gravis quis. Antehabeo diam huic praemitto. Immitto pneum ratis vereor volutpat. Brevitas facilisis illum macto mos plaga ratis utrum. Jumentum rusticus secundum
</div>
</div>

<div class="views-row">
<div class="field-group-format-toggler-abstract">+</div>
<h2>Title 2</h2>
<div class="field-group-format-wrapper">
Facilisi humo illum loquor mos nibh praesent quidem valde validus. Causa comis et lobortis sudo usitas vulpes. Cui facilisis hos huic letalis lobortis mos saluto secundum vulputate. Appellatio immitto inhibeo jumentum paratus. 
</div>
</div>

CSS

.field-group-format-toggler-abstract {
    cursor: pointer;
    font-weight: bold;
    min-height: 24px;
    width: 14px;
    float: left;
    padding-top: 4px;
    padding-right: 7px;
  
}

.field-group-format-toggler-abstract h2 {
    float: left;
    clear: both;
    min-height: 24px;
}
.views-row {
margin-top: 20px
}

JavaScript

$(".field-group-format-toggler-abstract").click(function() {
    $(this).nextAll(".field-group-format-wrapper").toggle();
});