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<title>Cornered with gradient border</title>
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<h2 class="cornered">sources : </h2>
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<li><a href="https://stackoverflow.com/a/40747995">pour le border en gradient cf https://stackoverflow.com/a/40747995</a></li>
<li><a href="https://stackoverflow.com/a/30668976">pour le @at-root ul#{&} cf https://stackoverflow.com/a/30668976</a></li>
<li><a href="https://www.colorzilla.com/gradient-editor/">pour construire les gradients cf https://www.colorzilla.com/gradient-editor/</a></li>
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