body{ background: #CCCCCC; }
#banner{ width: 500px; height: 500px; margin-left: 400px; margin-right: 400px; border: 2px solid white;
}
h1{ text-align: center; }
p{ text-align: center; }
em strong{ color:red; }
#mision{ fron-size: 20px; }
body{ background: #CCCCCC; }
#banner{ width: 500px; height: 500px; margin-left: 400px; margin-right: 400px; border: 2px solid white;
}
h1{ text-align: center; }
p{ text-align: center; }
em strong{ color:red; }
#mision{ fron-size: 20px; }
Vas bien, te felicito