What is the best way to incorporate an image as an input group addon without any surrounding padding or margin?

Hello, I am currently working on integrating a captcha image into a Bootstrap 4 form as an input group item. It is functioning correctly, but there is an issue with a border around the image causing the input field to appear larger than the others. Below is the code snippet along with an attached picture for reference. Any help would be greatly appreciated.

<fieldset class="form-group">
    Captcha
    <div class="input-group">
    <img class="input-group-addon img-fluid" src="<?php LinkGen::getLink("captcha.php"); ?>" style="margin:0;">
    <input type="text" class="form-control" id="AntiSpamImage" name="AntiSpamImage" autocomplete="off" required />
    </div>
</fieldset>

https://i.stack.imgur.com/XwGux.png

htmlcsstwitter-bootstrapbootstrap-4

Answer №1

Make sure to include the classes p-0 and m-0 on your captcha image.

Here is an example:

<fieldset class="form-group">
    Captcha
    <div class="input-group">
    <img class="input-group-addon img-fluid p-0 m-0" src="<?php LinkGen::getLink("captcha.php"); ?>">
    <input type="text" class="form-control" id="AntiSpamImage" name="AntiSpamImage" autocomplete="off" required />
    </div>
</fieldset>

These are default Bootstrap 4 classes that can be used to remove padding and margin without needing any css hacks.

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