@keyframes sk-fade-in{0%{opacity:0}50%{opacity:0}to{opacity:1}}.sk-fade-in{-ms-animation:sk-fade-in 2s;animation:2s sk-fade-in}.sk-fade-in-half-second{-ms-animation:sk-fade-in 1s;animation:1s sk-fade-in}.sk-fade-in-quarter-second{-ms-animation:sk-fade-in .5s;animation:.5s sk-fade-in}