JSFiddle - React, Tailwind, and code Playground by oliverdoetsch October 28, 2013 HTML <div class="flex-box"> <div class="flex-item"> <h3 >Ich bin zentriert!!</h3> <p>Diese Box ist horizontal und vertikal zentriert, egal wie groß diese Box oder das umgebende Element ist.</p> </div> </div> CSS .flex-box { display: -webkit-box; display: -webkit-flex; display: -moz-box; display: -ms-flexbox; display: flex; -webkit-box-align: center; -webkit-align-items: center; -moz-box-align: center; -ms-flex-align: center; align-items: center; -webkit-box-pack: center; -webkit-justify-content: center; -moz-box-pack: center; -ms-flex-pack: center; justify-content: center; height: 24em; background: #ff1; min-width: 10em } .flex-item { width: 50% }