.celebration-animation-chat{mask-image:linear-gradient(transparent,#000 120px,#000 calc(100% - 120px),transparent);-webkit-mask-image:linear-gradient(transparent,#000 120px,#000 calc(100% - 120px),transparent)}@media(height <= 450px){.celebration-animation-chat{mask-image:linear-gradient(transparent,#000 120px,transparent 60%);-webkit-mask-image:linear-gradient(transparent,#000 120px,transparent 60%)}}