JSFiddle - React, Tailwind, and code Playground

HTML

<div id="wrapper">
    <div id="b730"  class="box">730</div>
</div>

CSS

#wrapper {
    position: absolute ;
    top: 10px ;
    left: 10px ;
    width: 300px ;
    height: 350px ;
    background-color: grey ;
}

.box {
    position: absolute ;
    left: 1px ;
    width: 100px ;
    background-color: lightgreen ;
}

#b1100 {
    height: 110px ;
    bottom: 1px ;
}

#b390{
    height: 39px ;
    bottom: 112px ;
}

#b230 {
    height: 23px ;
    bottom: 152px ;
}

#b730 {
    height: 73px ;
    bottom: 176px ;
}