What does this mean?

People using screen readers are not able to see the layout of a form. To make forms accessible, they must define explicit text labels for each form control.

Usually the best solution is to use a <label> element. The label may be linked to by the form control:

<label for="name">Full name</label>
<input type="name" id="name">

or the <label> can be wrapped around the form control:

    Full name <input type="name">

Buttons are different, as their labels are specified by the code for the button, e.g.

<input type="submit" value="Send message">
<button>Send message</button>

Alternatively ARIA attributes, such as aria-label may be used, but this information will not be conveyed to visual users. For more information, see W3C's guide to labeling controls.

Hidden input fields (<input type="hidden">) do not require labels. Note that the placeholder attribute should not be used as an alternative to a label.

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HTML Found on page Issues
<input autocomplete="off" type="text" size="10" class="gsc-input" name="search" title="search" id="gsc-i-id1" style="width: 100%; padding: 0px; border: none; margin: -0.0625em 0px 0px; height: 1.25em; background: url(&quot;https://www.google.com/cse/static/images/1x/en/branding.png&quot;) left center no-repeat rgb(255, 255, 255); outline: none;" dir="ltr" spellcheck="false"> 125
125 distinct issues were found in the sample of 125 web pages.
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