{
    margin:0;
    padding:0;
    box-sizing: border-box;
}

body{
    font-family: Arial, Helvetica, sans-serif  ;
}
.contenedor{
    padding: 60px;
    width: 90%;
    max-width: 1000px;
    margin: auto;
    overflow: hidden;
}
.titulo{
    color: #642a73;
    font-size: 30px;
    text-align: center;
    margin-bottom: 30px;
}
/* header */
/* buscar en uigradients.com elgradiente del color para la cabecera */
header{
    width: 100%;
    height: 400px;
    background: #dee2e345;  
    /* fallback for old browsers */
    background: -webkit-linear-gradient(to right, hsl(313, 64%, 38%), hwb(300 4% 72%), hsla(320, 17%, 86%, 0.257)), url(../Img/Software-1.jpg); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    background: linear-gradient(to right, hsla(313, 84%, 70%, 0.351), hwb(184 4% 72% / 0.169), hsla(309, 96%, 55%, 0.169)), url(../Img/Software-1.jpg); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
    background-size: cover;
    background-attachment: fixed;
    position:relative
}
nav{
    text-align: right;
    padding: 30px 50px 0 0;
}
nav > a{
    color: #fff;
    font-weight: 300;
    text-decoration: none;
    margin-right: 10px;
}
nav > a:hover{
    text-decoration: underline;
}
header .textos-header{
    display: flex;
    height: 200px;
    width: 100%;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    text-align: center;
}
.textos-header h1{
    font-size: 30px;
    color: #fff;
}
.textos-header h2{
    font-size: 30px;
    color: #fff;
}

/*elemento ola */
.wave{
    position: absolute;
    bottom: 0;
    width: 100%;
}
/* about as*/
.contenedor-sobre-nosotros{
    display: flex;
    justify-content: space-evenly;
}
.imagen-about-as{
    width: 38%; 
}
.contenedor-sobre-nosotros .contenido-textos{
    width: 58%;
}
.contenido-textos h3{
    margin-bottom: 10px;
}
.contenido-textos h3 span{
    background-color: #4d0686;
    color: #fff ;
    border-radius: 50%;
    display: inline-block;
    text-align: center;
    width: 30px;
    height: 30px;
    padding: 2px;
    box-sizing: 0 0 6px rgba(0, 0, 0, .5);
    margin-right: 5px;
}
.contenido-textos p{
    padding: 0px 0px 30px 15px;
    font-weight: 300px;
    text-align: justify;
}
footer{
    background: #414141;
    padding: 60px 0px 30px 0;
    margin: auto;
    overflow: hidden;
}
.contenedor-footer{
    display: flex;
    width: 90%;
    justify-content: space-evenly;
    margin: auto;
    padding-bottom: 10px;
    border-bottom: 1px solid #ccc;
}
.content-foo{
    text-align: center;
}
.content-foo h4{
    color: #fff;
    border-bottom: 3px solid #af20d3;
    padding-bottom: 5px;
    margin-bottom: 10px;
}
.content-foo p{
    color: #ccc;
}
.titulo-final{
    text-align: center;
    font-size: 24px;
    margin: 20px 0 0 0;
    color: #9e9797;
}
/* para hacer responsive */
/* cuando llegue a 900 px ajuste al centro*/
@media screen and (max-width:900px) {
    header{
        background-position: center;
    }
    .contenedor-sobre-nosotros{
        flex-direction: column;
        justify-content: center ;
        align-items: center;
    }
    
    .sobre-nosotros .contenido-textos{
        width: 90%;
    }    
    .imagen-about-as{
        width: 90%;
    }

}