JSFiddle - React, Tailwind, and code Playground

HTML

<div class="options">
    <div class="opt1">
        <select title="Please choose Warranty">
            <option value="">Select Waranty</option>
            <option value="1">1 year guarantee</option>
            <option value="2">3 year guarantee</option>
        </select>
    </div>
    <div class="opt2">
        <select title="Please choose Color">
            <option value="">Select Color</option>
            <option value="1">Red</option>
            <option value="2">Blue</option>
        </select>
    </div>
    <div class="opt3">
        <select title="Please choose Size">
            <option value="">Select Size</option>
            <option value="1">Small</option>
            <option value="2">Big</option>
        </select>
    </div>
</div>

CSS

.options > div:not(:first-child) select { background:yellow;}