JSFiddle - React, Tailwind, and code Playground

HTML

<a href="http://www.ticket.no.com"><img class="emailImage" alt="Ticket.no" border="0" id="headerImage campaign-icon" mc:allowdesigner="" mc:allowtext="" mc:edit="header_image" mc:label="header_image" src="https://s-media-cache-ak0.pinimg.com/564x/c6/95/89/c695890575a094c86bd796ce8490be33.jpg"  /></a>

<a href="http://fb.st/xjmwhd">

<img class="emailImage" src="https://s-media-cache-ak0.pinimg.com/564x/c6/95/89/c695890575a094c86bd796ce8490be33.jpg" alt="Facebook">

</a>

<a href="http://ticketkalender.no/#14788025611671&amp;if_height=1081">

<img class="emailImage" src="https://s-media-cache-ak0.pinimg.com/564x/c6/95/89/c695890575a094c86bd796ce8490be33.jpg" alt="Ticketkalender.no" >

</a>

CSS

@media only screen and (max-width: 480px){
        .emailImage{
            height:auto !important;
            max-width:600px !important;
            width: 100% !important;
        }
    }