JSFiddle - React, Tailwind, and code Playground

HTML

<div id="black_div">
    <div id="logo_j"><img src="/joomla8/templates/krasota/image/logo.jpg" width="998" height="251" hspace="8" vspace="8" /></div>
    <div id=main_menu><jdoc:include type="modules" name="main_menu" style="xhtml" /></div>
    <div id="content"><div id="mm"></div></div>
   </div>

CSS

#black_div {
  display: block;
  position: relative;
  overflow: hidden;
  width: 1050px;
  height: 100%;
   background-color: rgba(0, 0, 0, 0.4);
  margin: 10px 25px;
  border-radius: 8px;    
}
html, body {
  margin: auto; 
  padding: 0px; 
  position: relative; 
  height: 100%   
}

body {
  height: 100%;
  width: 1100px;
  padding: 0 0;
  margin: 0 auto;  
  background: #ffffff url(../image/bg.jpg) no-repeat 50% 0;  
}

#wrapper {
  display: block;
  position: absolute;
  text-align:left;
  margin: 0 top;
  width: 100%;
  height: 100%;
  
}

#logo {
  display: block;
  position: relative;
  background-image: url(../image/lady.png);
  width: 294px;
  height: 73px;
  margin: 5px 25px;
}

#black_div {
  display: block;
  position: relative;
  overflow: hidden;
  width: 1050px;
  height: 100%;
   background-color: rgba(0, 0, 0, 0.4);
  margin: 10px 25px;
  border-radius: 8px; 
  
  
}

#niz {
   min-height: 50px; /* для всех нормальных браузеров */
   height: auto !important; /* для всех нормальных браузеров */
   margin-bottom: -7em; /* отступ для футера */
   margin-left: 25px;
   margin-top: 20px;
   
}
  
#footer {
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
  font: arial regular 13pt;    
}

#logo_j {
  display: block;
  position: relative;
  width: 1014px;
  height: 266px;
  background-color: #ffffff;
  border-radius: 8px 8px 0 0;
  margin-top: 20px;
  margin-left: 18px;  
}
#content {
   display: block;
   position: relative;
   width: 1014px;
   height: 40%;
   margin-top: 0;
   margin-left: 18px;
   background: green;
   
   
}
#mm {
  width: 100px;
  height: 300px;
  background: #000000;
}