main{
    background-image: url(../img/fondoconcurso.png);
    background-position: top;
    background-repeat: repeat-y;
    min-height: calc(100vh - 81px); /* alto total (con respecto a la ventana) menos alto header */
    background-size: contain;
    -webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
	padding: 25px 0;
}


.imagen {
    position: relative;
    width: 100%;
}    
    
h1 {
    font-family: "Rubik";
    color: #FFFFFF;
    font-size: 25px;
    width: 385px;
    height: 45px;
    padding-left: 61px;
    padding-top: 7px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    background: transparent url('../img/bgktituloceleste.png') no-repeat;
}
    
a{   
 text-decoration:none;   
}
.texto{

    padding-left: 20px;
    padding-right: 20px;
    padding-bottom: 30px;
    /*background-image: url(../img/bgkcontenedor.png);*/
    background-color: rgba(255, 255, 255, .7);
}    
.texto p{
    font-family: "Rubik",sans-serif;
    color: black;
    font-size: 13px;
    text-align: justify;
}

 

#botonera{
    background-color: rgba(255, 255, 255, .7);
	width: 100%;
	/* lo siguiente centra tanto vertical como horizontal */
    margin: auto;
    left: 0;
    right: 0;
    top: 0;
    padding-bottom: 10px;
}

#botonera a{
	width: 347px;
	display: block;
    padding-bottom: 20px;
    margin: auto;
}

.imagenyt{
    width: 100%;
    background-color: rgba(255, 255, 255, .7);
    padding: 20px;
    }