*{margin: 0; padding: 0;}
body{font-family: Arial, Helvetica, sans-serif; background-color: #555;}
a{text-decoration: none;}
#tudo{text-align: center;}
#topo{margin: 0 auto;min-width: 950px;height: 130px;text-align: left;}
#topo img{margin-top: 25px;margin-left: 50px;border: none;}
#topo #slogan{position: relative;font-family: Lucida Sans,Times New Roman;font-style: italic;
    color: #fff;font-size: 16px;right: 50px;top: 20px;display: inline;float: right;}
nav{width: 100%;min-width: 800px;text-align: center;}
nav a{font-family: Lucida Sans;font-weight: bold;color: #fff;}
nav a:hover{text-decoration: underline;}
nav ul{list-style: none;background: #3b81a1 url("../images/back_menu.png");padding: 10px;}
nav li{display: inline;padding: 10px;}
#principal{min-height: 450px;text-align: left;min-width: 950px;margin: 0 auto;width: 950px;padding-bottom: 20px;}
#principal h1{font-family: "Trebuchet MS","Times New Roman", "Lucida Sans", sans-serif;
    font-size: 2.0em;color: #fff;}
#principal a, footer a{color: #dee;}
#principal a:hover{text-decoration: underline;color: #fc7;}
#principal p{color: #eee;line-height: 17px;}
#principal h2{color: #ac0;text-decoration: underline;font-family:  "Lucida Sans", "Times New Roman",
    sans-serif;font-size: 120%;font-style: normal;}
footer{text-align: center;clear: both;font-size: 75%;color: #ccc;}