body {margin: 5rem; /* =50px;  DIF.*/ 
              text-align: center;     
              }    
  
        /* Target ÷ Context/Default = Result */               
	    .container {margin:0 auto; }  /* auto line-height: 1.429; ??? 14.29 OR 17.86px */
        .main {text-align: center; margin-left: 30%; width:50%; padding: .5rem 0 0 0;}  /*margin-left: 30%; width:50%; padding: .5rem 0 0 0;   =5px */ /* DIF. */
        .About {margin: 10.05rem 25% 0 25%; font-family: Arial; font-size: 1.7rem; text-align: justify;}