includes/required-error.php
<style>
.maera-init-error {
width: 50%;
max-width: 500px;
min-width: 300px;
font-size: 18px;
margin-left: auto;
margin-right: auto;
margin-top: 10%;
color: #a94442;
background-color: #f2dede;
border-color: #ebccd1;
font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
padding: 22px;
border-radius: 3px;
}
</style>
<div class="maera-init-error">
<?php _e( 'This theme requires some plugins to be installed on your site. Please visit your dashboard and install those before proceeding any further.', 'maera' ); ?>
</div>