.article4 {
  height: 700px;
  background: url(../images/a4-bg.png) #000 no-repeat;
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  padding: 0;
}

.a4-text {
  width: 700px;
  color: #222;
  text-align: center;
}

.a4-text h1 {
  font-size: 35px;
  font-family: "notokr-black";
  font-weight: normal;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
}

.a4-text p {
  font-size: 50px;
  font-family: "notokr-regular";
  letter-spacing: -0.0625em;
  margin-bottom: 3rem;
}

.a4-text p span {
  color: var(--main-color);
  font-family: "notokr-bold";
}

.a4-text h5 {
  color: #444;
  font-size: 18px;
  font-family: "notokr-light";
}

/*==================================================*/
@media (max-width: 1250px) {
  .article4 {
    height: 600px;
    padding: 80px 0;
  }

  .a4-text {
    width: 100%;
  }

  .a4-text h1 {
    font-size: 25px;
  }

  .a4-text p {
    font-size: 35px;
    margin-bottom: 1.5rem;
  }
}

@media (max-width: 750px) {
  .article4 {
    height: 500px;
    background-size: 130%;
  }
}

@media (max-width: 500px) {
  .article4 {
    height: 320px;
    background-size: 150%;
  }
  .a4-text p {
    font-size: 30px;
  }

  .a4-text h5 {
    font-size: 14px;
  }
}