@media only screen and (max-width: 760px) {
  .titleMob {
    margin: 15px 0;
    font-size: 34px;
    line-height: 1.2em;
  }
  .spanMob {
    font-size: 14px;
    margin: 15px;
  }
  .potesMob {
    padding: 20px;
  }
  .buttonMob {
    padding: 15px 0px;
  }
}