JSFiddle - React, Tailwind, and code Playground

HTML

<div id="workContent">
  <div id="workContentBorder">
    <div id="workContentData">
    Próba<br />
    Próba<br />
    Próba<br />
    Próba<br />
    Próba<br />
    </div>
  </div>
</div>

CSS

#workContent {
    display: block;
    position: relative;
    height: auto;
    min-height: 50px;
    max-height: calc(100vh - 120px);
    margin: 70px auto 50px auto;
    padding: 3px;
    border-radius: 5px;
    background: linear-gradient(to top, #C4C4C4 0%,#FFFFFF 100%);
    z-index: 1;
    box-sizing: border-box;
    overflow-x: hidden;
    overflow-y: scroll;
}

#workContentBorder {
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: 5px 5px 17px 5px;
    border:solid 1px gray;
    border-radius:3px;
    padding:5px;
    padding-bottom: 6px;
    box-shadow:1px 1px 0 0 rgba(255,255,255,0.8);
}

#workContentData {
    display: block;
    position: relative;
    width: calc( 100% - 12px );
    /*max-height: 423px;*/
    height: calck( 100% - ( 70px + 50px ) );
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    overflow-y: scroll;
    border-radius: 3px;
    border-left: solid 1px gray;
    border-top: solid 1px gray;
    background: lightgray;
    box-shadow: 1px 1px 0 0 rgba(255,255,255, 1);
    min-width: 100px;
    margin: 0 10px 0 0;
    padding: 5px;
}