/* Mara Tiepolt y Guillermina Macias. 3ero Economía */
header {
    background: lightpink;
    width: 100%;
    position: fixed;
    z-index: 100;
}
nav {
    float: none;
    text-align: center;
}
nav ul {
    list-style: none;
    margin: 0%;
    padding: 0%;
    overflow: hidden;
}
nav ul li {
    float: none;
    display: inline-block;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 16px;
}
nav ul li a {
   display: block;
   padding: 10px;
   color: palevioletred;
   text-decoration: none;
}
h1 {
    padding-top: 150px;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    color: rosybrown;
}
.centrado {
    text-align: center;
}
h2 {
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}
h3 {
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}
img {
    width: 400px;
    height: 250px;
    margin: auto;
}
body { 
    background-color: papayawhip;
}