JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    zoom:50%
    <div class="boxWithArrow">
    </div>
    
    <div class="boxWithArrow zoom50">
    </div>
</div>


<div class="container">
    transform: scale(0.5);
    <div class="boxWithArrow">
    </div>
    
    <div class="boxWithArrow scale50">
    </div>
</div>

<div class="container">
     transform: scale(0.5);
        transform-origin: 0 0;
    <div class="boxWithArrow">
    </div>
    
    <div class="boxWithArrow scale50-with-same-origin">
    </div>
</div>

CSS

.container { 
    display:block; 
    clear:both; 
    height: 100px;
}

.boxWithArrow {
    padding: 10px;
    border: solid 1px     black;
    width: 50px;
    height: 50px;
    position:absolute;
    left: 50px;
  
}
.boxWithArrow:after {
    content: '';
    position: absolute;
    left: 100%;
    width: 0;
    height: 0;
    border-left: 8px solid black;
    border-top: 8px solid transparent;
    border-bottom: 8px solid transparent;
    top: 10px;
}
.zoom50 {
    zoom: 0.5;
    zoom: 50%;
    -ms-zoom: 50%;
}
.scale50 {
    -webkit-transform: scale(0.5);
    -moz-transform: scale(0.5);
    transform: scale(0.5);
}
.scale50-with-same-origin {
    -webkit-transform: scale(0.5);
    -moz-transform: scale(0.5);
    transform: scale(0.5);
    -webkit-transform-origin: 0 0;
    -moz-transform-origin: 0 0;
    transform-origin: 0 0;
}