html{height:100%}body{position:absolute;top:0;bottom:0;right:0;left:0;width:900px;margin:auto}.auth__container{margin:300px calc((100% - 300px - 2rem)/2);padding:2rem;width:300px;display:table;background-color:#2d2d2f;box-shadow:0 0 5px rgba(0,0,0,0.7);color:white}.auth__container div{display:table-row;line-height:3rem}.auth__container div>*:first-child,.auth__container div>*:last-child{display:table-cell}.flash__alert__auth{background:brown;border-radius:5px;width:100%;padding:0.5rem}