body{padding:0 10px;margin:10px auto;max-width:750px}.content{display:flex;justify-content:space-around;flex-wrap:wrap}.centered{text-align:center}hr{margin-top:3em;border:1px solid grey;border-radius:5px;width:33%}.hidden{display:none}.black{color:#000}.white{color:transparent}.red{color:red}.green,.red{font-weight:700}.green{color:green}