.introduction {
    margin-bottom: 5%;
}

.subhead {
    padding-top: 3%;
    text-align: center;
}

img {
    max-width: 80%;
    height: auto;
    border: 10px solid black;
  }

@media (max-width: 844px) {

    .subhead {
        padding-top: 13%;
    }

}