body {
    background-color: #dfdfdf;
}
body, header p {
    margin: 0;
}
header {
    background-color: #94d6aa;
    padding: 30px;
    display: flex;
    align-items: center;
}
header p {
    flex-grow: 1;
}
header, a {
    color: #3a3c3b;
}
h1 {
    text-align: center;
}
nav ul {
    list-style: none;
}
nav li {
    display: inline;
    margin-right: 6px;
    font-size: 1rem;
}
nav a, a.redondo {
    text-decoration: none;
    font-family: "Zain Bold", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;

}
a.activo {
    color: #108b72;
}
section.encabezado {
    background-image: url("imagenes/modelo\ dental\ azul\ copia\ mas\ oscuro.PNG");
    background-size: cover;
    padding: 150px;
    background-position: 50% 50%;
}
section.encabezado h1, section.encabezado p {
    color:#94d6aa;
    text-shadow: 1px 1px 4px rgb(51, 50, 50);
}
.aterrizaje {
    section:not(.encabezado) {
        display: flex;
        align-items: center;
        flex-direction: column;
        margin-top: 20px;
        p, h1, h2 {
            max-width: 720px;
        }
    }
    h1, h2, p {
        text-align: center;
        margin-left: 0;
    }
}
section {
    padding: 30px;
}
h2 {
    margin-left: 45px;
}
section h1, section h2, section p {
    color:#3a3c3b;
}
h2, p, li {
    color: #3a3c3b;
}
@font-face {
    font-family: "Archivo Black";
    src: url("fuentes/ArchivoBlack-Regular.ttf");
}
@font-face {
    font-family: "Zain";
    src: url("fuentes/Zain-Light.ttf");
}
@font-face {
    font-family: "Zain Bold";
    src: url("fuentes/Zain-Bold.ttf");
}
h1 {
    font-family: "Archivo Black", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 2rem;
}
p, li, a {
    font-family: "Zain", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 1.4rem;
}
h2 {
    font-family: "Zain Bold", "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}
.centrar {
    display: flex;
    align-items: center;
    flex-direction: column;
    text-align: center;
}
.redondeado {
    background-color: #94d6aa;
    border-radius: 40px;
    img {
        margin-top: 8px;
        border-radius: 8px;
    }
}
footer {
    margin-top: 20px;
    background-color: #333;
    padding: 20px;
    text-align: center;
    color: #ffffff;
}
.redondo {
    border-radius: 20px;
    padding: 8px 20px;
    background-color:#649d77;
    color: #3a3c3b;
    transition: background-color 300ms ease-in-out;
}
.redondo:hover {
    background-color:#9D648A;
}
.articulos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin: 0 200px;
    gap: 16px;
    div {
        background-color: #94d6aa;
        border-radius: 8px;
        padding: 8px;
    }
    img {
        border-radius: 50%;
        border: 4px solid #649d77;
    }
    h2 {
        margin-left: 15px;
    }
    p {
        margin: 8px 20px;
        font-size: 20px;
    }
}
.columnas {
    display: flex;
}
ul {
    list-style-type: "➤";
}
li::marker {
  font-size: 0.85em;
}
.listaok {
    list-style-type: "✓";
}