JSFiddle - React, Tailwind, and code Playground

HTML

<div class="dropdown">
<div class="dropdown1">
  <button class="dropbtn">Climate Change<div class="arrow1">&#10162;</div></button>
  <div class="dropdown-content">
    <a href="https://thepotatoshop.com/shop/mash/highland-burgundy-red-1kg/">Greenhouse Gases</a>
    <a href="https://thepotatoshop.com/shop/mash/arran-victory-1kg/">Carbon Dioxide</a>
    <a href="https://thepotatoshop.com/shop/mash/desiree-1kg/">Methane</a>
    <a href="https://thepotatoshop.com/shop/salad/belle-de-fontenay-1kg/">Water Vapour</a>
    <a href="https://thepotatoshop.com/shop/salad/belle-de-fontenay-1kg/">NF3</a>
  </div>
</div>
</div>

CSS

.dropbtn {
    background-color: #4CAF50;
    transition: 0.3s;
    color: white;
    padding: 16px;
    padding-right: 32px;
    font-size: 16px;
    border: none;
    cursor: crosshair;
    border-radius: 2px;
}


/* Dropdown Content (Hidden by Default) */
.dropdown-content {
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    transition: all 1s ease-in;
    overflow:hidden;
    height:0;
}

/* Links inside the dropdown */
.dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

/* Change color of dropdown links on hover */
.dropdown-content a:hover {
    background-color: #f1f1f1;
    color:  #000000;

}

/* Show the dropdown menu on hover */
.dropdown:hover .dropdown-content {
    height:200px;
}

/* Change the background color of the dropdown button when the dropdown content is shown */
.dropdown:hover .dropbtn {
    background-color: #3e8e41;
    color:  #000000;
    transition: 0.3s;
}

.dropdown1 {
    position: fixed;
    top: 150px;
    left: 50px;

}

.dropdown2 {
    position: fixed;
    top: 150px;
    left: 220px;

}

.dropdown3 {
    position: fixed;
    top: 150px;
    left: 615px;

}

.dropdown4 {
    position: fixed;
    top: 150px;
    left: 1003px;

}

.pageheading {
    font-family: verdana;
    font-size: 85% ;
    position: absolute;
    left: 50px;
    top: 210px;
    background-color: #4CAF50;
    border-radius: 6px;
}

.pageparagraph {
    font-family: verdana;
    text-align: justify;
    position: absolute;
    left: 50px;
    top: 290px;
    right: 685px;
    background-color: #4CAF50;
    border-radius: 6px;
}

.logo {
    font-family: verdana;
    font-size: 150%;
    color: white;
    position: fixed;
    top: 10px;
    left: 50px;
    background-color: #4CAF50;
    border-radius: 6px;
}

body {
    background-image: url("ForestBackground.jpg");
    background-repeat: no-repeat;
}


.arrow1 {
   ...