::view-transition-new(root){mask:url('data:image/svg+xml,') center /0 no-repeat;animation:scale 1s}.dark::view-transition-old(root),::view-transition-old(root){animation:none;z-index:-1}.dark::view-transition-new(root){animation:scale 1s}@keyframes scale{0%{mask-size:0}50%{mask-size:40vmax;animation-timing-function:ease-in-out}to{mask-size:2000vmax}}