JSFiddle - React, Tailwind, and code Playground

by Dejan Munjiza

HTML

<div id="header">
  <div class="container">
    <div class="header-wrapper">
      <!-- Menu box 1 -->
      <div class="menu-box menu-one">
        <div class="first-item">Menu One</div>
        <div class="menu-items">
          <ul>
            <li><a href="#">Item One</a></li>
            <li><a href="#">Item Two</a></li>
            <li><a href="#">Item Three</a></li>
          </ul>
        </div>
      </div>

      <!-- Menu box 2 -->
      <div class="menu-box menu-two">
        <div class="first-item">Menu Two</div>
        <div class="menu-items">
          <ul>
            <li><a href="#">Item One</a></li>
            <li><a href="#">Item Two</a></li>
            <li><a href="#">Item Three</a></li>
            <li><a href="#">Item Four</a></li>
            <li><a href="#">Item Five</a></li>
            <li><a href="#">Item Six</a></li>
          </ul>
        </div>
      </div>

      <!-- Menu box 3 -->
      <div class="menu-box menu-three">
        <div class="first-item">Menu Three</div>
        <div class="menu-items">
          <ul>
            <li><a href="#">Item One</a></li>
            <li><a href="#">Item Two</a></li>
          </ul>
        </div>
      </div>
      
      <!-- Menu box 4 -->
      <div class="menu-box menu-four">
        <div class="first-item">Menu Four</div>
        <div class="menu-items">
          <ul>
            <li><a href="#">Item One</a></li>
            <li><a href="#">Item Two</a></li>
            <li><a href="#">Item Three</a></li>
          </ul>
        </div>
      </div>

      <!-- Menu box 5 -->
      <div class="menu-box menu-five">
        <div class="first-item">Menu Five</div>
        <div class="menu-items">
          <ul>
            <li><a href="#">Item One</a></li>
            <li><a href="#">Item Two</a></li>
          </ul>
        </div>
      </div>
      
    </div>
  </div>
</div>

<!-- Main content -->
<!-- Heading -->
<section id="heading">
  <div class="container heading">
    <div...

CSS

body, html {
  padding: 0;
  margin: 0;
}
body * {
  box-sizing: border-box;
}
#header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  background: #d2d2d2;
  z-index: 999;
}
.container {
  width: 100%;
  max-width: 1890px;
  margin: 0 auto;
  padding: 20px;
}
.header-wrapper {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
}
.menu-box {
  flex: 0 0 15%;
  display: flex;
  flex-direction: column;
}
.menu-items {
  display: none;
  float: left;
  padding-top: 20px;
}
.menu-items ul {
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
}
.menu-items ul li {
  list-style: none;
}
.menu-items ul li a {
  float: left;
  padding: 10px 0;
  text-decoration: none;
  color: white;
}

/* Sections and content */
section {
  float: left;
  width: 100%;
}
#heading {
  margin-top: 58px;
}
#heading .heading {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
#heading .heading * {
  text-align: center;
}
#heading .heading .title {
  width: 100%;
  max-width: 800px;
  font-size: 48px;
  padding-bottom: 200px;
}
/* Grid */

.grid-container {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  float: left;
  width: 100%;
}

.grid-row {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.gi-one {
  flex: 0 0 24%;
  margin: 0.5%;
  background: #d2d2d2;
}

.gi-two {
  flex: 0 0 49%;
  margin: 0.5%;
  background: #d6d6d6;
}

@media screen and (max-width: 960px) {
  .grid-row {
    flex-direction: column;
  }
  .gi-one,
  .gi-two {
    flex: 0 0 98%;
    width: 98%;
    margin: 1%;
  }
}

JavaScript

$( '.first-item' ).mouseover( function(){
  $( '.menu-items' ).slideDown();
});

$( '#header' ).mouseleave( function(){
  $( '.menu-items' ).slideUp();
});