@media only screen and (max-width: 600px) {
  * {
    padding: 0;
    margin: 0;
  }
  body {
    max-width: 100vw;
  }
  /* some key tags  */
  section {
    padding: 30px 10px;
  }
  /* header */
  .mob-logo {
    height: fit-content;
    margin: 10px 130px;
  }
  .mob-logo img {
    width: auto;
    height: 80px;
  }
  .header {
    display: flex;
    justify-content: space-between;
  }
  .mob-top {
    display: none;
  }
  .header {
    background: none;
    position: relative;
    .logo img {
      width: auto;
      height: 80px;
    }
    .reg button {
      font-size: 14px;
      width: 150px;
      height: 50px;
    }
    .nav-bar a {
      display: none;
    }
  }
  .icon {
      display: none;
  width: 0px;
  height: 0px;
}
  .mobile-nav {
    display: block;
  }
  .my-profile{
      width: 80px;
  }
  main {
    padding-bottom: 60px;
  }
  /* home  */
  .home {
    height: calc(100vh - 150px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
  }
  .home {
    .home-left {
      width: 100vw;
      height: calc(100vh - 150px);
      padding: 0 10px;
    }
    .home-left h2 {
      width: 60vw;
      font-size: 25px;
    }
    .home-left h3 {
      font-size: 20px;
    }
    .home-left-links {
      margin: 10px 0 0 0;
    }
    .home-left-links > a box-icon {
      width: 40px;
      height: 40px;
    }
    .home-left-title {
      gap: 30px;
    }
    .home-right {
      display: none;
    }
    button{
      font-size: 16px;  
      padding: 8px 12px;
    }
  }

  /* idea  */
  .idea {
    /* margin-top: -250px; */
    .idea-head {
      width: 80vw;
      height: fit-content;
      padding: 0;
    }
    .idea-content {
      display: flex;
      flex-direction: column;
    }
    .idea-cont {
      width: 100vw;
      display: flex;
      flex-direction: column;
      margin: 0;
    }
    .idea-pic {
      width: 100vw;
    }
    .idea-pic-img {
      width: 90vw;
      margin: 0 auto;
    }
  }
  .donating-steps {
    display: none;
  }
  .donating-steps-mobile {
    display: block;
  }
  .m-steps-top{
    margin-bottom: 30px;
  }
  .m-steps-card{
    margin: 7px 0;
  }
  /* core team  */
  .core-team {
    .core-head {
      padding: 20px;
    }
    .core-members {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }
    .core-members > div {
      padding: 0;
    }
  }
  .donate-blood {
    display: flex;
    flex-direction: column;
  }
  .donate-blood-head h1{
    padding: 0;
  }
  .donate-blood-wrapper {
    flex-direction: row;
  }
  .donate-blood-all-indicators {
    flex-direction: column;
    gap: 5px;
  }
  .donate-blood-all-indicators img {
    width: 75px;
    height: 75px;
  }
  .swiper {
    width: 90vw;
    height: 65vh;
    margin: 30px 0;
    padding: 30px 20px;
  }  
  .donate-blood-child {
    padding: 10px 30px;
    flex-direction: column;
  }
  .donate-blood-child-right {
    width: 100%;
    padding-right: 0;
  }
  #donate_blood{
    display: none;
  }
  #m-donate_blood{
    display: block;
  }
  .donate-blood-child-right h1{
    font-size: 22px;
  }
  .donate-blood-child-right p{
    font-size: 18px;
  }
  /* contact us  */
  .contact-container {
    flex-direction: column;
    padding: 15px;
  }

  .contact-info {
    margin-left: 0;
    margin-top: 40px;
  }
}