.animation-container-files{z-index:1;opacity:.7;background-position:0 0;background-repeat:repeat;width:100%;height:100%;position:absolute;top:0}.no-webp .animation-container-files{background-image:url(../img/fichier-motif.png)}.webp .animation-container-files{background-image:url(../img/fichier-motif.webp)}#animation-files-forward{background-size:auto 600px;animation:11s linear infinite containerAvant}#animation-files-backward{background-size:auto 300px;animation:4s linear infinite containerArriere}#animation-files-background-gradient{background:var(--color-header);width:100%;height:100%;transition-duration:var(--transition-duration-1);transition-property:background;position:absolute;top:0}@keyframes containerAvant{0%{background-position:0 0}to{background-position:0 -600px}}@keyframes containerArriere{0%{background-position:0 0}to{background-position:0 -300px}}