JSFiddle - React, Tailwind, and code Playground

HTML

<div class="head"><p>logo</p></div>
<div class="content"><p>text</p></div>
<div class="footer"><p>copyright</p></div>

CSS

html, body {
    height: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
}
p {
    margin: 0;
}
.head {
    width: 100%;
    height: 250px;
}
.content {
    width: 100%;
    min-height: calc(100% - 250px - 100px);
    background-color: #99ccff;
}
.footer {
    width: 100%;
    height: 100px;
    background-color: #336699;
}