@starting-style

@starting-style is a CSS at-rule in the At-rules category. Defines starting styles for elements when first displayed. The syntax is @starting-style { /* rules */ }. A typical example: @starting-style { .dialog { opacity: 0; } } It is commonly applied to markup such as <div class="demo">Sample</div> Browser support: Chrome 117+, Firefox 129+, Safari 17.5+, Edge 117+. A close relative is @media, which applies styles conditionally based on device features like viewport width. A close relative is @keyframes, which defines animation sequences with named keyframes. A close relative is @font-face, which defines custom fonts to be downloaded and used in the document. More about this category: CSS at-rules — @media, @keyframes, @font-face, @supports and more. Related At-rules entries: @media, @keyframes, @font-face, @import, @supports, @container, @layer, @scope. This page is part of the free CSS Reference documentation covering 841+ properties, selectors, functions, and at-rules, each with syntax, values, examples, and browser support.