.garantia-box{
    background:#f7f7f7;
    border:1px solid #ddd;
    padding:2rem;
    margin:2rem 0;
    border-radius:.5rem;
    opacity:0;
    max-height:0;
    overflow:hidden;
    transition:all .45s ease;
}

.garantia-box:not(.hidden){
    opacity:1;
    max-height:1500px;
}

.garantia-titulo{
    margin-top:0;
    margin-bottom:1rem;
    color:#444;
}

.garantia-texto{
    color:#666;
    line-height:1.5;
    margin-bottom:2rem;
}