main {
  background: #fff;
  padding: 35px;
  margin-top: 70px;
  font-size: 14px;
  letter-spacing: .05em;
  line-height: 1.7;
}

main h3,
main h4 {
  font-size: 16px;
  margin: 1em 0;
  font-weight: bold;
}

main h3 {
  margin-top: 0;
}

main strong {
  display: block;
  margin-top: 1.5em;
}

main .contact_link {
  display: block;
  width: 300px;
  height: 34px;
  text-align: center;
  line-height: 34px;
  color: #fff;
  font-size: 16px;
  font-weight: bold;
  margin: 30px auto 0;
  background: #333;
  transition: all .2s linear;
}

main .contact_link:hover {
  width: 330px;
}

@media screen and (max-width: 767px) {
  main {
    padding: 15px;
    width: auto;
    width: calc(100% - 30px);
    box-sizing: border-box;
    margin-top: 35px;
    font-size: 13px;
  }
  main h3,
  main h4 {
    font-size: 14px;
  }
  main h3 {
    font-size: 15px;
  }
  main .contact_link {
    width: 100%;
  }
  main .contact_link:hover {
    width: 100%;
  }
}