JSFiddle - React, Tailwind, and code Playground

HTML

<div class="blokhlava"></div>
<div class="blokmenu"></div>
<div class="blokinfo"></div>
<div class="blokpatka"></div>

CSS

.blokhlava
{
    width:100%;    
    height:40px;
    background: blue;
}
.blokmenu
{
    height:70%;
    width:200px;
    position:absolute;
    float:left;
    background: yellow;    
}
.blokinfo
{
    width:200px;
    height:430px;
    position:absolute;
    float:left;
    border:1px solid #111;
}
.blokpatka
{
    width:100%;
    height:60px;
    border:1px solid #111;
    position:absolute;
    margin-top:100%;
}