body {
    margin: 1em;
    background-color:#f3f3f3; 
} 

a{
  color:blue;
}

pre {
    white-space: pre-wrap;      
    white-space: -moz-pre-wrap;  
    white-space: -pre-wrap;     
    white-space: -o-pre-wrap;   
    word-wrap: break-word;       
    font-family:helvetica;
    font-size:1rem;
     line-height:1.4;
}