styles.css

body {
    margin: 0;
    padding: 0;
    --color-theme: #004aad;
    --color-active: #dc6563;
    --color-back-active: antiquewhite;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}



ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

h1 {
    text-align: center;
    margin: 0;
}

h1>img {
    width: 150px;
}

header {
    position: fixed;
    top: 0;
    background: white;
    width: 100%;
    background: var(--color-back-active);
}


nav>ul {
    display: flex;
    justify-content: space-between;
    justify-content: center;
}

nav li {
    flex: 0 0 auto;
}

nav li a {
    display: block;
    padding: 16px 12px;
    text-align: center;
    text-decoration: none;
    font-size: 1em;
    font-weight: bold;
    color: var(--color-active);
    border-right: 2px dashed rgba(194, 65, 51, 0.2);
}

nav li:last-child a {
    border: 0;
}

main {
    margin-top: 110px;
}

main>article {
    padding: 16px;
    display: none;
}

@media (min-width: 400px) {
    main {
        padding: 0 10%;
    }
}

h2 {
    color: var(--color-theme);
    margin: 16px 0;
}

#charla textarea {
    width: 95%;
    height: 50px;
}

#charla section {
    display: flex;
    justify-content: space-around;
}

#charla section button {
    display: block;
    text-align: center;
    text-decoration: none;
    padding: 16px;
    margin: 8px;
    font-size: 0.9em;
    border: 0;
    border-radius: 24px;
    background-color: var(--color-active);
    color: white;
    font-weight: bold;
    user-select: none;
    -webkit-user-select: none;

}

.hablando {
    background-color: black !important;   
}

#limpiar {
    color: var(--color-active);
    background-color: white;
    margin: 10px;
    font-size: 1.2em;
    border: 0;
}

textarea {
    font-size: 16px;
}

#charla li {
    margin: 16px 0;
    border-radius: 16px;
    background-color: var(--color-back-active);
    padding: 16px;
}

#charla li a {
    text-decoration: none;
    font-size: larger;
    padding: 8px;
}

#hablar:disabled {
    background-color: white;
    color: silver;
}
#hablar:disabled::after {
    content: ' 🎙 '
}

#pictogramas ul {
    display: flex;
    width: 100%;
    overflow: scroll;
    scroll-snap-type: x mandatory;
}

#pictogramas a {
    display: block;
    margin: 4px;
    text-decoration: none;
    text-align: center;
    color: var(--color-theme);
    scroll-snap-align: center;
}
#pictogramas img {
    width: 120px;
}
#pictogramas li p {
    background-color: var(--color-back-active);
    padding: 16px;
    color: black;
}
footer p {
    font-size: small;
    color: gray;
}
button, a {
    user-select: none;
    -webkit-user-select: none;

}

video {
    width: 80%;
    aspect-ratio: 1/1;
    margin: 16px;
    border: 2px solid gray;
}

#camara button {
    font-size: 1.1em;
    text-align: center;
    padding: 12px;
}
#camara output {
    display: block;
    margin: 16px;
    padding: 16px;
    border: 1px dashed gray;
}
#camara output:empty {
    display: none;
}
#camara a {
    text-decoration: none;
    font-size: larger;
    padding: 8px;
}

#instalar {
    position: absolute;
    top: 8px;
    right: 8px;
    background-color: var(--color-theme);
    color: white;
    border: 0;
    padding: 13px;
    border-radius: 10px;
    display: none;
}


#ayuda p {
    margin-bottom: 16px;
}