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<h1>Dieser Inhalt ist immer schön zentriert</h1>
<h2>… und passt sich der Browser-Breite an, wenn dadurch der Text nicht zu schlecht lesbar wird!</h2>

<p>Lorem ipsum qui ex sale facilis, vel in quidam adolescens. Cum ut ludus homero liberavisse, ex nec lobortis scripserit reformidans. Ignota posidonium ea ius, eos atomorum pericula elaboraret eu. Mea inani deseruisse ea, at nam salutandi instructior, alii impetus dolorem cum at. Nibh eruditi definiebas an mea, per ut sonet debitis delectus.</p>

<p>Principes dignissim dissentias quo ea. Eirmod maluisset mnesarchum vix no, pri eu prodesset definiebas reprehendunt. Vis mutat numquam propriae ea, duo tollit quaeque gloriatur at. Vel ut odio repudiare consequat, qui ex congue inimicus temporibus. Pro cu imperdiet constituam persequeris, volumus facilisis in vis.</p>



                * {
  box-sizing: border-box;

body {
  background-color: #1ba2ec;
  font-family: Verdana, sans-serif;

h1, h2 {
  font-size: 100%;

main {
  width: 60%;
  /* zwischen 300px und 800px passt 
  sich die Breite automatisch an! */
  min-width: 300px;
  max-width: 800px;
  margin: 40px auto;
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 4px 2px rgba(0,0,0,.3);