.btn_expandir{
    cursor: pointer;
}

.content{
    width: 100%;
    min-height: 100vh;
    height: auto;
    display: flex;
    justify-content: flex-start;
}

.content-collapse{
    margin: 30px;
    padding: 30px;
    width: 400px;
    height: auto;
    border: 1px solid gray;
}

.content-collapse section:nth-child(n){
    text-align: justify;
    position: relative;
    background: #fff;
}

.content-collapse section:nth-child(n) button{
    margin: 10px 0 10px 0;
}

.texto_expandir{
    position: relative;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.4s ease-out; 
}

.abrir_cerrar{
    max-height: 500px;
    transition: max-heigth 0.5s ease-in;
}