JSFiddle - React, Tailwind, and code Playground

HTML

<div class="informationbox">
    <div class="left">Left Filler Line #1
        <br />Left Filler Line #2
        <br />Left Filler Line #3
        <br />Left Filler Line #4
        <br />Left Filler Line #5</div>
    <div class="right">Right Filler</div>
</div>

CSS

.informationbox {
    position: relative;
    width: 50%;
    background-color:green;
    overflow: hidden;
}
.left {
    width: 50%;
    float: left;
    background-color: pink;
}
.right {
    width: 50%;
    float: right;
    text-align: right;
    background-color: red;
    vertical-align:middle;
}
.informationbox {
    position: relative;
}
.right {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
}