JSFiddle - React, Tailwind, and code Playground

by mlms13

HTML

<div id="container">
    <input id="test" style="margin-left: 40px;" />
    <input />
    <input />
    <input />
</div>

CSS

#container {
    margin-left: 40px;
    position: relative;
}
input {
    display: block;
    margin: 6px 0;
}

.warning {
    background: #fff;
    border: 1px solid #ccc;
    border-bottom-color: #aaa;
    border-right-color: #aaa;
    border-radius: 6px;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.2);
    font-family: sans-serif;
    font-size: 15px;
    padding: 8px;
    position: absolute;
}
.warning span {
    background: #f6a712;
    background-image: -webkit-linear-gradient(-45deg, #f6a712, #e98107);
    border: 1px solid #ef8c00;
    border-top-color: #d18e0f;
    border-left-color: #bd7d13;
    border-radius: 2px;
    color: #fff;
    font-family: monospace;
    font-size: 14px;
    font-weight: bold;
    margin-right: 12px;
    padding: 0 4px;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.6);
}

JavaScript

var a = document.getElementById('test'),
    box = document.createElement('div'),
    bang = document.createElement('span');

function getDocumentOffset(el) {
    var tempLeft = 0, tempTop = 0;
    
    if (el.offsetParent) {
        
    }
}

bang.appendChild(document.createTextNode('!'));

box.className = 'warning';
box.appendChild(bang);
box.appendChild(document.createTextNode('Please fill out this field.'));
box.style.left = a.offsetLeft + 'px';
box.style.top = (a.offsetTop + a.offsetHeight + 2) + 'px';

a.parentNode.insertBefore(box, a.nextSibling);
a.focus();