.accordion {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    width: 95%;
    height: auto;
    font-family: Arial, Helvetica, sans-serif;
    border: 1px solid #dedede;
    border-radius: 8px;
    margin: 0 auto;
}

/*Contenedor común plegar/desplegar*/
.accordion-toggle,
.accordion-header {
    font-size: 24px;
    width: 100%;
    height: 3em;
    margin: 0;
    line-height: 3em;
    cursor: pointer;
}

/*El botón que pliega/despliega*/
.accordion-toggle {
    opacity: 0;
    background-color: transparent;
    z-index: 1;
    margin-bottom: 2px;
}

/*Bloque para el título*/
.accordion-header {
    background-color: #ffffff;
    color: #20487b;
    position: relative;
    margin-top: -3em;
    padding-left: 10px
}

/*Bloque replegable con el contenido */
.accordion-content {
    box-sizing: border-box;
    background-color: #f7f7f7;
    font-size: 15px;
    color: #5c5b5b;
    overflow: auto;
    position: relative;
    width: 100%;
    height: 250px;
    margin-bottom: -250px;
    padding: 0 20px;
    transition: margin 0.3s ease 0.1s;
}

.accordion-toggle:checked + .accordion-header + .accordion-content {
    margin-bottom: 0;
    margin-right: 0;
}

.accordion-header::before,
.accordion-toggle:checked + .accordion-header::before {
    content: '+';
    display: inline-block;
    text-align: center;
    width: 1em;
    font-size: 1em;
}

.accordion-toggle:checked + .accordion-header::before {
    content: '-';
}

.accordion-toggle:hover + .accordion-header {
    background-color: #f7f1f1;
}

.accordion-toggle:checked + .accordion-header {
    background-color: #fff;
}