body {
   background-color: white;
   margin-left: 10%;
   margin-right: 10%;
}       

div.headline {
   border: solid;
   border-width: thin;
   background: purple;
   padding: 0.5em;
   
}

a.button {
   border: solid;
   border-width: thin;
   border-foreground: black;
   padding-left: 0.5em;
   padding-right: 0.5em;
   padding-top: 0.5em;
}