| Unit | Windows 10 (Chromium) | DMP (QT Browser) | LG (WebOS) | iOS 10 (Safari) |
| `em` & `rem` | ❗️ | ✅ | ✅ | ✅ |
| `%` | ✅ | ✅ | ✅ | ✅ |
| `vh` & `vw` | ✅ | ⚠️ | ✅ | ⚠️ |
| Key | Description |
| ⚠️ | Inconsistent dimensions, the starting size of the document may be smaller than the actual screen resolution. May result in incorrect viewport sizes. |
| ❗️ | Root element has a default `font-size` of 1px. So 1.0 em == 1px. Recommend html{
font-size: 16px;
} |
| ✅ | No known issues. |