.image-placeholder .border-gradient:after{--angle:0deg;--border-color:var(--color-gray-300);--highlight-color:var(--color-primary-500,var(--ui-color-primary-500));background:var(--border-color);border-radius:.8rem;content:"";inset:0;margin:-1px;opacity:.5;position:absolute;z-index:-1}.dark .image-placeholder .border-gradient:after{--border-color:var(--color-gray-700);--highlight-color:var(--color-gray-400)}@supports (background:linear-gradient(red,blue)){.image-placeholder .border-gradient:after{animation:rotate 10s linear infinite;background:linear-gradient(var(--angle),var(--border-color),var(--border-color),var(--border-color),var(--border-color),var(--highlight-color))}}@keyframes rotate{to{--angle:360deg}}@property --angle{syntax:"<angle>";initial-value:0deg;inherits:false}