I'm not exactly an expert CSS developer but surely the 'delay-1', ... 'delay-18' should be replaced with a wrapper class and something in the form of: .delay-c

I'm not exactly an expert CSS developer but surely the 'delay-1', ... 'delay-18' should be replaced with a wrapper class and something in the form of: .delay-contents:nth-child(1) { animation-delay: 0.6s; } etc