* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
:root {
  --primary: #20bec8;
  --white1: #fff;
  --white2: #f7f7f7;
  --grey1: #6d6d6d;
  --grey2: #a7a7a7;
  --black: #0b0b0b;
}

.bg_banner {
  background-image: url("/images/bg-test-banner.png");
  background-position: center;
}

/* common  */
section h2::before {
  content: "";
  position: absolute;
  width: 60px;
  height: 4px;
  background-color: var(--primary);
  bottom: -30px;
  left: 50%;
  transform: translateX(-50%);
}
section h2::after {
  position: absolute;
  color: var(--grey1);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: Work Sans;
  font-size: 40px;
  font-style: normal;
  font-weight: 700;
  line-height: 100%;
  z-index: -1;
  opacity: 0.1;
}

/* #our defferences  */

#our_differences h2::after {
  content: "Differences";
}
#how_we_work h2::after {
  content: "Process";
}

/* how_we_work */
.bg-color {
  position: relative;
}
.bg-color::after {
  content: "";
  position: absolute;
  background-color: var(--white2);
  width: 100vw;
  height: 100%;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: -2;
}
#how_we_work h3 {
  position: relative;
}
#how_we_work h3::after {
  content: "";
  position: absolute;
  bottom: -20px;
  left: 0;
  height: 4px;
  width: 60px;
  background-color: var(--primary);
}
.bg-contact {
  background-color: var(--black);
  color: var(--white1);
  border-radius: 20px 20px 0 0;
}
button.contact {
  background-color: var(--primary);
  border-radius: 8px;
}
#contact_us .img-contact img {
  border-radius: 0 0 20px 20px;
}

@media screen and (min-width: 768px) {
  #contact_us .img-contact img {
    border-radius: 0 20px 20px 0;
  }
  .bg-contact {
    border-radius: 20px 0 0 20px;
    position: relative;
    overflow: hidden;
  }
  .bg-contact::before {
    content: "";
    position: absolute;
    background-image: url("/images/arrow-contact.png");
    background-size: contain;
    background-repeat: no-repeat;
    width: 100%;
    height: 50%;
    top: 0%;
    right: -20%;
  }
  .bg-contact::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 50%;
    right: -70%;
    border-radius: 50%;
    background: linear-gradient(180deg, rgba(11, 11, 11, 0) 0%, #6e29ff 100%);
    filter: blur(100px);
  }
  section h2::after {
    font-size: 72px;
    line-height: 130%;
  }
}