[css] Detect if an input has text in it using CSS -- on a page I am visiting and do not control?

Using JS and CSS :not pseudoclass

_x000D_
_x000D_
 input {_x000D_
        font-size: 13px;_x000D_
        padding: 5px;_x000D_
        width: 100px;_x000D_
    }_x000D_
_x000D_
    input[value=""] {_x000D_
        border: 2px solid #fa0000;_x000D_
    }_x000D_
_x000D_
    input:not([value=""]) {_x000D_
        border: 2px solid #fafa00;_x000D_
    }
_x000D_
<input type="text" onkeyup="this.setAttribute('value', this.value);" value="" />_x000D_
_x000D_
   
_x000D_
_x000D_
_x000D_

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Detect if an input has text in it using CSS -- on a page I am visiting and do not control?