/* .logo {
    width: 100px;
    border-radius: 100px;
    
} */

h1, h2, p, ul, li {
    margin: 0;
    padding: 0;
}

body {
    font-family: cursive;
    font-size: 110%;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), 
    url(imagenes/discalculia.jpg);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}

@keyframes parpadeo {
    0% {
        box-shadow: 0 0 30px 10px rgb(121, 113, 113);
    }

    50% {
        box-shadow: 0 0 30px 10px rgb(121, 113, 113);
    }

    70% {
        box-shadow: 0 0 30px 10px rgb(121, 113, 113);
    }

    100% {
        box-shadow: none;
    }
}

.cabecera {
    background-color: rgba(26, 25, 25, 0.8);
    color: #ffffff;
    padding: 20px;
    margin-left: 30%;
    margin-right: 30%;
    border-radius: 20px;
    font-size: 30px;
    animation: parpadeo 3s infinite;
}

h1 {
    margin: 0;
    text-align: center
}
  
nav {
    background-color: rgba(75, 73, 73, 0.5);
    padding: 10px;
    border-radius: 20px;
    box-shadow: 0 0 30px 10px rgba(0, 0, 0);
    margin-top: 10px;
    margin-left: 30%;
    margin-right: 30%;
    text-align: center
}

#e-oculto {
    display: none;
    position: absolute;
    width: 250px;
    height: 30px;
    background-color: #fff;
    top: 23%;
    right: 20%;
    border-radius: 20px;
}
  
nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
  
nav ul li {
    display: inline;
    border-style: solid;
    border-color: black;
    border-width: 0 1px 0 0;
}

.inicio {
    border-style: solid;
    border-color: black;
    border-width: 0 0 0 1px;
}
  
nav ul li a {
    color: #fff;
    text-decoration: none;
    padding: 5px;
}

.temas {
    padding: 5px;
    margin: 1px;
    background-color: rgb(228, 222, 222);
    color: black;
}

.temas ul li{
    display: block;
    border-style: solid;
    border-color: #fff;
    padding: 7px 0 7px 0;
    border-width: 0 0 1px 0;
    border-bottom-color: rgba(0, 0, 0, 0.4);
}

.temas ul li a {
    color: black;
}

#temario {
    width: 220px;
    height: 200px;
    position: fixed;
    padding-top: 20px;
    top: 141px;
    opacity: 0.9;
}

  
#content {
    padding: 20px;
    max-width: 65%;
    position: relative;
    left: 200px;
    opacity: 0.9;
}

#content article h2 {
    font-size: 45px;
}

#content article h4 {
    display: inline;
}

.intro {
    font-weight: bold;
    padding: 3px 0 4px;
    font-size: 25px;
}

#content article p{
    margin: 15px 0;
}

.enlace {
    display: inline-block;
    font-size: 80px;
    text-decoration: none;
    position: fixed;
    left: 5%;
    top: 5%;
    transition: transform 0.3s ease-in-out;
}

.enlace:hover {
    transform: scale(1.5);
}

#bio {
    position: absolute;
    width: 224px;
    height: 550px;
    padding: 10px;
    padding-top: 20px;
    top: 162px;
    right: 10px;
    background-color: #d6b4b4;
    opacity: 0.9;
    border-radius: 20px;
}

#bio p {
    margin: 20px 0;
}

#bio h3 {
    margin-top: 0;
}

  
article {
    background-color: #fff;
    padding: 20px;
    margin: 1px 1px 10px 1px;
    text-align: justify;
    height: 1300px;
}
  
article h2 {
    margin-bottom: 10px;
}
 
.imagenes {
    width: 800px;
    height: 500px;
    margin-left: 10px;
}

iframe {
    margin-left: 125px;
    margin-top: 10px;
    margin-bottom: 10px;
}

.link {
    display: block;
}

footer {
    background-color: #333;
    color: #fff;
    padding: 20px;
    text-align: center;
}