a,body,br,dd,div,dl,dt,form,h1,h2,h3,h4,h5,h6,hr,img,input,li,ol,p,table,td,textarea,th,tr,ul{padding:0;margin:0}*{box-sizing:border-box}body,html{height:100%;width:100%}body{font-size:36px}li,ol,ul{list-style:none}a{text-decoration:none}a,img{display:block}img{border:0}.clearfloat{zoom:1}.clearfloat:after{display:block;clear:both;content:"";visibility:hidden;height:0}#app{display:flex;flex-direction:column}#app .container{flex:1}