section {
    width: 100%;
    margin-bottom: 25px;
}
#banner {
    margin-top: 25px;
    position: relative;
}
#banner img {
    width: 100%;
    height: 100%;
}
#banner .contenedor {
    position: absolute;
    top:10%;
    left: 50%;
    width: 20%;
    transform: translateX(-50%) translateY(050%);
    position: fixed;  
}
.cv {
    font-size: 15px;
    text-align: justify;
    margin-left: 10px;
    margin-right: 10px;
}
#libros .textito {
    font-size: 15px;
    text-align: justify;
    margin-left: 10px;
    margin-right: 10px;
}
section .cv img {
    width: 60%;
    height: 60%;
}
section .cv p img {
    width: 60%;
    height: 60%;   
}
section .cv iframe {
    width: 70%;

}
section .art p img {
    width: 90%;
    height: 90%;   
}
li {
    padding: 10px;
}