*{  box-sizing: border-box;
    padding: 0;
    margin: 0;
}
.cen{
    margin-top: 30px;
    text-align: center;
    color: #1AC708;
    border-bottom: 3px solid #1AC708;
}
.contenedor{
    display: flex;
    justify-content: center;
    margin: 50px 20px;
}
.uno{
    width: 400px;
    height: 250px;
}
.dos{
    width: 350px;
    height: 250px;
}
.pp{ border-bottom: 3px solid #1AC708;}
.cajon{
    display: flex;
    justify-content: center;
    margin: 50px 20px;
}
.text-dos{
    margin-top: 30px;
}
.volver{
    display: flex;
    justify-content: center;
    text-align: center;
}
button{
    justify-content: space-between;
    align-items: center ;
    border-radius: 35px;
    box-shadow: 3px 2px 2px 0.8px rgb(44, 44, 46);
    background-color: #1AC708;
    border: 10px;
    padding: 30px;
    text-align: center;
    color: #ffffff;
    font-size: 20px;
    margin: 4px 2px;
    cursor: pointer;
    transition: all .3s ease;
}
button:hover{
    background-color: rgb(128, 5, 5);
    color: #1AC708;
    padding-right: 15px;
}
@media(max-width:700px) {
    .uno{ display: none;}
    .dos{display: none;    }
}