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<html><head><style>.button { background-color: #04AA6D; border: none; color: white; padding: 15px 32px; text-align: center; text-decoration: none; display: inline-block; font-size: 16px; margin: 4px 2px; cursor: pointer;}</style></head><body><h2>CSS Buttons</h2><button>Default Button</button><a href="#" class="button">Link Button</a><button class="button">Button</button><input type="button" class="button" value="Input Button"></body></html>