.activity{position:absolute;left:-45%;height:100%;width:45%;background-image:linear-gradient(to left,#fbfbfb0d,#fbfbfb4d,#fbfbfb99,#fbfbfb4d,#fbfbfb0d);background-image:-webkit-linear-gradient(to left,rgba(251,251,251,.05),rgba(251,251,251,.3),rgba(251,251,251,.6),rgba(251,251,251,.3),rgba(251,251,251,.05));animation:loading 1s infinite;z-index:45}@keyframes loading{0%{left:-45%}to{left:100%}}