* {
  box-sizing: border-box;
}
#header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}
#page {
  position: relative;
}
#main-block {
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  position: relative;
}
#main-block .container-inner {
  display: flex;
  flex-direction: column;
  padding: 60px 40px;
}
#main-block .center-content {
  margin-top: 120px;
}
#main-block .big-logo {
  margin: 0 auto;
  margin-bottom: 0px;
  display: flex;
  margin-bottom: -70px;
  height: 230px;
}
#main-block .main-title {
  font-size: 90px;
  font-weight: 700;
  text-align: center;
  text-shadow: 0px 0px 10px #000000a3;
}
#main-block .main-desc {
  text-align: center;
  font-size: 24px;
  color: #fff;
  font-weight: 400;
}
#main-block .top-features {
  display: flex;
  align-items: center;
  justify-content: space-around;
  margin: 70px 0;
}
#main-block .feature-item {
  width: 30%;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #fff;
  font-weight: 400;
  text-transform: uppercase;
}
#main-block .feature-img {
  width: 50px;
  height: 50px;
}
#main-block .feature-count {
  margin: 20px 0;
  font-size: 40px;
  font-weight: 600;
}
#main-block .bottom-content {
  display: flex;
  justify-content: center;
}
#main-block .bottom-content a {
  border: 2px solid #fff;
  border-radius: 55px;
  width: 55px;
  height: 55px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  font-weight: 400;
  transition: 0.2s;
}
#main-block .bottom-content a:hover {
  background: #fff;
  color: #f04345;
}
h2 {
  font-size: 35px;
  font-weight: 400;
  margin-bottom: 20px;
}
#footer-bottom #back-to-top {
  height: auto;
}
#footer-bottom #back-to-top i {
  top: 0;
}
@media (max-width: 719px) {
  .nav-menu.mobile {
    background: rgba(0, 0, 0, 0.52);
  }
  #main-block .center-content {
    margin-top: 150px;
  }
  #main-block .big-logo {
    height: 110px;
    margin-bottom: -50px;
  }
  #main-block .main-title {
    font-size: 50px;
  }
  #main-block .top-features {
    flex-wrap: wrap;
    margin: 50px 0;
  }
  #main-block .feature-item:nth-child(1) {
    width: 50%;
    order: 2;
  }
  #main-block .feature-item:nth-child(2) {
    width: 100%;
    order: 1;
    margin-bottom: 20px;
  }
  #main-block .feature-item:nth-child(3) {
    width: 50%;
    order: 3;
  }
}