@media only screen and (max-width: 600px) {
  slide-m3 {
    position: absolute;
    margin: auto;
    width: 100%;
    top: 10%;
    padding-left: 20px;
    padding-right: 20px;
    color: black;
    text-align: center;
    width: 100%;
  }
}

a {
  color: black;
  text-decoration: none;
}