.sec1 {
  max-width: 1800px;
  margin: auto;
  height: 400px;
  background: linear-gradient(to right, rgba(0, 0, 0, 0.123), rgba(0, 0, 0, 0.397)), url(../images/our\ client\ banner.avif);
  background-position: center;
  background-size: 100% 185%;
  text-align: center;
  padding-top: 250px;
  color: white;
  font-size: 40px;
}

.sec1 h1 {
  font-size: 55px;
  color: rgb(255, 255, 255);
  font-weight: 600;
  position: relative;
  z-index: 10;
}

.sec11-clients-a {
  max-width: 1800px;
  margin: auto;
  padding: 20px 5%;
  padding-bottom: 80px;
  background-color: rgb(255, 255, 255);
  display: flex;
  justify-content: space-evenly;
  flex-wrap: wrap;

}


@media screen and (max-width: 900px) {

  .sec1 {
    background-size: 120% 100%;
    height: 200px;
    padding-top: 100px;

  }

  .sec1 h1 {
    font-size: 30px;
    margin-top: 30px;
  }


}