html,
    body {
        color: white;
        box-sizing: border-box;
        margin: 0;
        padding: 0;
        height: 100%;
        width: 100%;
    }

    .container {
        width: 90%;
        height: 100%;
        background-color: rgb(16, 46, 92);
        margin: auto;
        box-sizing: border-box;
    }
    header,
    footer {
        width: 100%;
        height: 10%;
        display: flex;
        justify-content: center;
        align-items: center;
        background-color: rgba(20, 212, 20, 0.808);
        padding: 1%;
        font-size: clamp(1.5rem, 5vw, 50px);
        box-sizing: border-box;
    }

    .principal {
        height: 80%;
        width: 100%;
        display: flex;
        box-sizing: border-box;
    }
    
    .opciones {
        float: left;
        background-color: rgba(53, 124, 20, 0.685);
        height: 100%;
        width: 10%;
        padding: 1em;
        box-sizing: border-box;
        display: block;

    }

    .textos{
        float: left;
        width: 100%;
        height: 100%;
        overflow: auto;
        padding: 2em;
        box-sizing: border-box;
    }

    .botones {
        padding: 20px;
        background-color: rgba(110, 40, 168, 0.692);
        color: white;
        display: flex;
        justify-content: center;
        align-items: center;
        text-decoration: none;
    }
    .botones:hover{
        background-color: rgba(204, 18, 18, 0.856);
    }
    .vacio {
        clear: both;
    }

    /* RWD */
    @media (max-width: 700px) {
        .container {
            width: 100%;
            height: auto;
            min-height: 100%;
        }

        header,
        footer {
            height: auto;
        }

        .principal {
            flex-direction: column;
            height: auto;
        }

        .opciones {
            width: 100%;
            height: auto;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }

        .opciones h2 {
            width: 100%;
        }

        .botones {
            flex: 1 1 40%;
            padding: 12px;
        }

        .textos {
            height: auto;
            overflow: visible;
            padding: 1em;
        }
    }