html,body,div,span,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,abbr,address,cite,code,del,dfn,em,img,ins,kbd,q,samp,small,strong,sub,sup,var,b,i,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,figcaption,figure,footer,header,hgroup,menu,nav,section,summary,time,mark,audio,video{margin:0;padding:0;border:0;outline:0;font-size:100%;vertical-align:baseline;background:transparent} body{line-height:1} article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section{display:block} nav ul{list-style:none} blockquote,q{quotes:none} blockquote:before,blockquote:after,q:before,q:after{content:none} a{margin:0;padding:0;font-size:100%;vertical-align:baseline;background:transparent;text-decoration:none} mark{background-color:#ff9;color:#000;font-style:italic;font-weight:bold} del{text-decoration:line-through} abbr[title],dfn[title]{border-bottom:1px dotted;cursor:help} table{border-collapse:collapse;border-spacing:0} hr{display:block;height:1px;border:0;border-top:1px solid #ccc;margin:1em 0;padding:0} input,select{vertical-align:middle} li{list-style:none} /* ---- base ---- */ html,body{ width:100%; height:100%; background:#111; } html{ -webkit-tap-highlight-color: rgba(0, 0, 0, 0); } body{ font:normal 75% Arial, Helvetica, sans-serif; } canvas{ display:block; vertical-align:bottom; } /* ---- particles.js container ---- */ #particles-js{ width: 100%; height: 100%; background-color: #000000; background-image: url(''); background-size: cover; background-position: 50% 50%; background-repeat: no-repeat; } .cliff{ position: absolute; margin: auto; top: 0; right: 0; bottom: 0; left: 0; height: 30%; width: 50%; display:none }