* {
  margin: 0px;
  padding: 0px;
  font-family: Arial, Helvetica, sans-serif;
  box-sizing: border-box;
  scroll-behavior: smooth;
}
.maincontent {
  width: 100%;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  color: gray;
}

footer {
  width: 100%;
  background-color: black;
  height: 80%;
}

.section1 {
  height: 40%;
  padding: 25px 50px;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  color: white;
  border-bottom: 4px solid gray;
}

.section1 .content {
  width: 35%;
}

.section1 h1 {
  text-transform: uppercase;
  margin-bottom: 15px;
  font-size: 25px;
}

.links ul {
  list-style: none;
}

.links ul li {
  padding: 6px 0px;
}

.links ul li a {
  text-decoration: none;
  color: white;
  transition: 0.5s;
  margin-left: 5px;
  font-size: 15px;
}

.links ul li a:hover {
  border-left: 5px solid white;
}

.section3 {
  width: 100%;
  padding: 20px;
  border-bottom: 4px solid gray;
  display: flex;
  justify-content: center;
}
.section3 ul {
  list-style: none;
}

.section3 li {
  margin: 10px 10px;
  display: inline-block;
  height: 100px;
  width: 100px;
  border-radius: 50%;
  background-color: gray;
  font-size: 35px;
  box-shadow: 1px 1px 7px 0px black;
  transition: 0.7s;
}

.section3 li a {
  height: 100px;
  width: 100px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  text-decoration: none;
}

.section3 li a i {
  color: white;
  font-size: 45px;
  transition: 0.7s;
}

.section3 ul li:nth-child(1):hover {
  background-color: rgb(66, 103, 178);
}

.section3 ul li:nth-child(2):hover {
  background-color: #dd4b39;
}

.section3 ul li:nth-child(3):hover {
  background-color: #1da1f2;
}

.section3 ul li:nth-child(4):hover {
  background-color: #0072b1;
}

.section3 ul li:nth-child(5):hover {
  background-color: #ea4c89;
}
.section3 ul li:nth-child(6):hover {
  background-color: #fffc00;
}

.section3 li:hover i {
  transform: scale(1.35);
}

.section4 {
  height: 10%;
  width: 100%;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 20px;
  color: white;
}
.section4 p {
  position: relative;
}
.section4 p::after {
  content: "";
  display: block;
  width: 0;
  height: 3px;
  position: absolute;
  right: 0;
  bottom: -10px;
  background-color: gold;
  transition: all 0.5s;
}
.section4 p::before {
  content: "";
  display: block;
  width: 0;
  height: 3px;
  position: absolute;
  left: 0;
  top: -10px;
  background-color: gold;
  transition: all 0.5s;
}
.section4 p:hover::after {
  width: 100%;
}
.section4 p:hover::before {
  width: 100%;
}

@media (max-width: 900px) {
  .maincontent {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: gray;
  }

  footer {
    width: 100%;
    background-color: #26272b;
  }

  .section1 {
    height: 40%;
    padding: 25px 50px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    color: white;
    border-bottom: 4px solid gray;
    flex-wrap: wrap;
  }

  .section1 .content {
    width: 100%;
    margin-bottom: 30px;
  }

  .section1 h1 {
    text-transform: uppercase;
    margin-bottom: 15px;
    font-size: 25px;
  }

  .links ul {
    list-style: none;
  }

  .links ul li {
    padding: 6px 0px;
  }

  .links ul li a {
    text-decoration: none;
    color: white;
    transition: 0.5s;
    margin-left: 5px;
    font-size: 15px;
  }

  .links ul li a:hover {
    border-left: 5px solid white;
    color: black;
  }

  .section3 {
    width: 100%;
    padding: 50px;
    border-bottom: 4px solid gray;
    display: flex;
    justify-content: center;
  }
  .section3 ul {
    list-style: none;
  }

  .section3 li {
    margin: 10px 10px;
    display: inline-block;
    height: 100px;
    width: 100px;
    border-radius: 50%;
    background-color: gray;
    font-size: 35px;
    box-shadow: 1px 1px 7px 0px black;
    transition: 0.7s;
  }

  .section3 li a {
    height: 100px;
    width: 100px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
  }

  .section3 li a i {
    color: white;
    font-size: 45px;
    transition: 0.7s;
  }

  .section3 ul li:nth-child(1):hover {
    background-color: rgb(66, 103, 178);
  }

  .section3 ul li:nth-child(2):hover {
    background-color: #dd4b39;
  }

  .section3 ul li:nth-child(3):hover {
    background-color: #1da1f2;
  }

  .section3 ul li:nth-child(4):hover {
    background-color: #0072b1;
  }

  .section3 ul li:nth-child(5):hover {
    background-color: #ea4c89;
  }
  .section3 ul li:nth-child(6):hover {
    background-color: #fffc00;
  }

  .section3 li:hover i {
    transform: scale(1.35);
  }
  .section4 {
    height: 12%;
    width: 100%;
    padding: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    color: white;
  }
  .section4 p {
    position: relative;
  }
  .section4 p::after {
    content: "";
    display: block;
    width: 0;
    height: 3px;
    position: absolute;
    right: 0;
    bottom: -10px;
    background-color: gold;
    transition: all 0.5s;
  }
  .section4 p::before {
    content: "";
    display: block;
    width: 0;
    height: 3px;
    position: absolute;
    left: 0;
    top: -10px;
    background-color: gold;
    transition: all 0.5s;
  }
  .section4 p:hover::after {
    width: 100%;
  }
  .section4 p:hover::before {
    width: 100%;
  }
}

@media (max-width: 650px) {
  .maincontent {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    color: gray;
  }

  footer {
    width: 100%;
    background-color: #26272b;
  }

  .section1 {
    height: 40%;
    padding: 25px 50px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: white;
    border-bottom: 4px solid gray;
    flex-wrap: wrap;
  }

  .section1 .content {
    width: 100%;
    margin-bottom: 30px;
  }

  .section1 h1 {
    text-transform: uppercase;
    margin-bottom: 15px;
    font-size: 25px;
  }

  .links ul {
    list-style: none;
    margin-bottom: 20px;
  }

  .links ul li {
    padding: 6px 0px;
  }

  .links ul li a {
    text-decoration: none;
    color: white;
    transition: 0.5s;
    margin-left: 5px;
    font-size: 15px;
  }

  .links ul li a:hover {
    border-left: 5px solid white;
    color: black;
  }

  .section3 {
    width: 100%;
    padding: 50px;
    border-bottom: 4px solid gray;
    display: flex;
    justify-content: center;
  }
  .section3 ul {
    list-style: none;
  }

  .section3 li {
    margin: 10px 10px;
    display: inline-block;
    height: 100px;
    width: 100px;
    border-radius: 50%;
    background-color: gray;
    font-size: 35px;
    box-shadow: 1px 1px 7px 0px black;
    transition: 0.7s;
  }

  .section3 li a {
    height: 100px;
    width: 100px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
  }

  .section3 li a i {
    color: white;
    font-size: 45px;
    transition: 0.7s;
  }
  .section3 ul li:nth-child(1):hover {
    background-color: rgb(66, 103, 178);
  }

  .section3 ul li:nth-child(2):hover {
    background-color: #dd4b39;
  }

  .section3 ul li:nth-child(3):hover {
    background-color: #1da1f2;
  }

  .section3 ul li:nth-child(4):hover {
    background-color: #0072b1;
  }

  .section3 ul li:nth-child(5):hover {
    background-color: #ea4c89;
  }

  .section3 ul li:nth-child(6):hover {
    background-color: #fffc00;
  }

  .section3 li:hover i {
    transform: scale(1.35);
  }
  .section4 {
    height: 12%;
    width: 100%;
    padding: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    color: white;
  }
  .section4 p {
    position: relative;
  }
  .section4 p::after {
    content: "";
    display: block;
    width: 0;
    height: 3px;
    position: absolute;
    right: 0;
    bottom: -10px;
    background-color: gold;
    transition: all 0.5s;
  }
  .section4 p::before {
    content: "";
    display: block;
    width: 0;
    height: 3px;
    position: absolute;
    left: 0;
    top: -10px;
    background-color: gold;
    transition: all 0.5s;
  }
  .section4 p:hover::after {
    width: 100%;
  }
  .section4 p:hover::before {
    width: 100%;
  }
}