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.cat-51 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% -300%;}
.cat-52 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% -100%;}
.cat-53 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% -100%;}
.cat-54 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% 0%;}
.cat-55 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% -100%;}
.cat-56 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% -200%;}
.cat-57 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% -200%;}
.cat-58 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% -200%;}
.cat-59 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% 0%;}
.cat-60 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% -100%;}
.cat-61 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% -200%;}
.cat-62 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% 0%;}
.cat-63 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% -300%;}
.cat-64 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% -300%;}
.cat-65 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% -300%;}
.cat-66 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% 0%;}
.cat-67 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% -100%;}
.cat-68 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% -200%;}
.cat-69 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% -300%;}
.cat-70 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: 0% -400%;}
.cat-71 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -100% -400%;}
.cat-72 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -200% -400%;}
.cat-73 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -300% -400%;}
.cat-74 { background-image: url(sprite50-74.png); width: 100%; height: 0; padding-bottom: 100%; background-size: 500% 500%; background-position: -400% -400%;}