.background-blur{z-index:-1;-o-background-size:cover;-moz-background-size:cover;-webkit-background-size:cover;background-size:cover;background-attachment:fixed;width:100%;height:100%;margin:auto;display:block;position:fixed;inset:0}.blur-low{-moz-filter:blur(3px);-o-filter:blur(3px);-ms-filter:blur(3px);filter:blur(3px)}.blur-normal{-moz-filter:blur(20px);-o-filter:blur(20px);-ms-filter:blur(20px);filter:blur(20px)}.blur-high{-moz-filter:blur(50px);-o-filter:blur(50px);-ms-filter:blur(50px);filter:blur(50px)}