/* body */ 
body {   
    background-image: url(../img/fondo.png);
    background-position: center;
    background-size: cover;
    margin: 1.3rem 5rem 2rem 1.5rem;
    padding: 2rem 1.5rem
    }
.fondoindex{    
    background-image: url(../img/fondoindex.png);
    background-position: center;
    }
.fondopropuesta{    
    background-image: url(../img/fondopropuesta.png);
    background-position: center;
    background-size: cover;
    }

/* header */ 
header {
    background-color: black; 
    position:relative;
    padding: 1.1rem
    }
h1 {        
    font-family:sans-serif;
    text-align: center;
    color: #fff; 
    padding: 0rem 3.7rem;
    font-size: 1.9rem 
    }
nav {
    font-family: tahoma;
    }
nav ul { 
    list-style-type: none;
    overflow: hidden;
    }
nav ul li {
    float: left;
    font-family:tahoma;
    color: #fff;
    }
nav ul li a {
    text-decoration: none;
    color:#dff4ee;
    display: block;
    padding: 1rem 1.8rem;
    font-size: 1rem;
    }
li a:hover {
    background-color: #e81c63;
    }
.active {
    background-color: #e81c63;
    }
h2 {
    font-size: 1.5rem; 
    font-family:sans-serif; 
    color: #fff;
    padding: 0.5rem 2.3rem 0.5rem; 
    margin:0rem
    }
section{ margin-left: 4%; margin-right: 1%;}
article{
    border-width: 0.2rem;
    margin: 1.2rem 1.8rem;
    padding: 2rem;
    font-family: sans-serif;
    font-size: 0.85rem;
    position: relative;
    float: left;
    width: 21%;
    box-sizing: content-box;
    background-color: black;
    color: #e81c63;
     }
h3 {font-size: 1.3rem;
    font-kerning: 2rem;
    color: #fff;
    }
.color {
    color:#e81c63;
    }
/* footer */ 
.clear{clear:both}
footer{
    color: #fff;
    font-size: 0.5rem;
    padding: 1rem 8rem;
    line-height: center;
    text-align: center;
    font-family: sans-serif;
    }