CSS

CSSの「@keyframes」について書かれているサンプルはこちら

absolute display float height important linear-gradient overflow-y position relative sticky top user-select visibility background clear nth-of-type margin static bottom scss inline-block content before style first-child first-letter hover z-index import writing-mode clip blur brightness vw max-content overflow left focus attr :link :visited :any-link :target :hover :active :focus :enabled :disabled :lang :read-only :read-write :checked :indeterminate :root :not :is @charset @counter-style @font-face @import @keyframes @media @namespace @page @supports !important all color opacity font text-indent text-align vertical-align text-transform white-space line-height line-break word-break word-wrap word-spacing letter-spacing text-justify text-autospace tab-size layout-grid text-shadow text-decoration text-orientation direction ruby-align ruby-overhang ruby-position break-before break-after break-inside list-style list-style-type list-style-position list-style-image caption-side table-layout border-collapse border-spacing empty-cells quotes counter-reset counter-increment marker-offset size marks page orphans widows mix-blend-mode background-blend-mode isolation right overflow-x text-overflow padding width min-width min-height max-width max-height box-sizing resize border border-radius border-image box-shadow outline filter animation transform perspective backface-visibility transition columns flex-flow flex-direction flex-wrap order flex grid justify-self justify-items align-self place-self cursor ime-mode behavior scrollbar-base-color caret-color volume speak pause pause-before pause-after cue play-during azimuth elevation speech-rate voice-family pitch pitch-range stress richness speak-punctuation speak-numeral speak-header after animation-name deg ease forwards infinite inline-flex justify-content keyframes media not print rotate rotateY rotateZ scale screen scroll scrollbar touch-callout translate translateY background-size transparent align-content flex-start wrap flex-end space-between animation-duration nowrap space-around calc grid-template-rows grid-template-columns prefers-color-scheme type nth-child rgb rgba color-profile rendering-intent radial-gradient repeating-linear-gradient repeating-radial-gradient column-count column-width gap object-fit object-position image-orientation image-rendering image-resolution shape-outside shape-image-threshold shape-margin clip-path mask hyphens overflow-wrap marquee-style appearance icon outline-offset nav-index nav-up nav-right nav-down nav-left voice-volume voice-rate inset @k anchor-name position-anchor anchor