body
{background-color:#c768c5cc;color:antiquewhite;}
h1{text-align:center;}
a{margin:2%;}
article{float:left; width:40%;height:90%;border-right:double;padding:1%;}
section{}
aside{width:12%; float:left; paddinng:1%}
footer{ clear: both;}
table{background-color:#b4d9ff;max-width:240px;border-right:double;border-left:double;padding:1%; border-radius: 13px 13px 13px 13px;
-moz-border-radius: 13px 13px 13px 13px;
-webkit-border-radius: 13px 13px 13px 13px;
border: 10px solid #bba9f3;}

button{width:40px;margin:1px;border:2px outset;border-radius:6px;}

#pantalla{background-color:#ffcef4;
 margin:0.5em auto; padding:0 0.25em;
 border:inset 5px; border-radius:4px
 width:90%;display:inline-block;
 front-family:monospace;front-size:1.2em;letter-spacing:0.20em;}
button.doble{width:80px}
button:hover{border: inset #b72b8cd6 1px;}