* {
  margin: 0;
  padding: 0;;
}
*,*::before, *::after {
  box-sizing: border-box;
}
li {
  list-style: none;
}
a {
  text-decoration: none;
}
body {
  font-family: 'Roboto', sans-serif;
}
header {
  z-index: 1;
  position: fixed;
  width:100%;
  height: 84px;
  left: 0px;
  top: 0px;
  background-color:#007765;
  box-shadow: 0px 5px 10px 2px rgb(39, 39, 39);
}
.header__logo {
  transition: 0.2s;
  height: 50%;  
  display: flex;
  margin-top: 19px;
  margin-left: 55px;
  cursor: pointer;
}
nav{
  margin-top: 29px;
  margin-right: 55px;
  text-align: right;
}
.topnav span {
  color: #fff;
}

.topnav a{
  transition: 0.2s;
  display: inline-block;
  color:rgb(255, 255, 255);
}
.topnav a.header__helper:hover {
  text-shadow:0px 0px 3px #fff;
  transition:0.2s;    
  transform: translateY(-2px);
}
.topnav a.icon:hover{
  transition: 0.2s;
  transform: scale(1.25);
}
.header__logo:hover {
  margin-left: 50px;
  margin-top: 17px;
  transition: 0.2s;
  height: 55%;
}
.topnav .icon {
  display: none;
}
main {
  display: flex;
  flex-direction: column;
  width: 100%;
}
main .main__welcome {
  position: relative;
  margin-top: 84px;
  width: 100%;
  height: 649px;
  text-align: center;
  font-size: 40px;
  padding-top: 275px;
}
h1 {
  transition: 0.2s;
  color: #fff;
}
h1 span {
  color: #00ffd9;
}
h1:hover{
  transition: 0.2s;
  font-size: 100px;
}
.main__problem {
  align-self: center;
  width: 1100px;
  height: 719px;
}
.fon1{
  transition: 0.2s;
  position: absolute;
  top:0;
  left:0;
  width: 100%;
  height: 649px;
  z-index: -1;
}
.fon2 {
  transition: 0.2s;
  position: absolute;
  top:0;
  left:0;
  width: 100%;
  height: 649px;
  z-index: -2;
}
h1:hover  .fon2{
  transition: 0.5s;
  z-index: -1;
}
.black {
  position: absolute;
  margin-top: 733px;
  width: 100%;
  background-color:rgb(73, 73, 73);
  height: 740px;
  z-index: -1;
  box-shadow: 0px 0px 10px 5px rgb(0, 0, 0);
}
.black2 {
  position: absolute;
  top: 1936px;
  width: 100%;
  background-color:rgb(73, 73, 73);
  height: 604px;
  z-index: -1;
  box-shadow: 0px 0px 10px 5px rgb(0, 0, 0);
}
h2 {
  padding: 48px;
  font-weight: 500px;
  color:#00ffd9;
  text-align: center;
  font-size: 40px;
}
.main__problem p {
  color:rgb(255, 255, 255);
  padding:15px;
  font-size: 32px;
  line-height: 37,5px;
  text-align: left;
  font-weight: 700px;
}
.together {
  position: relative;
  z-index: -2;
  background-image: url(super-computer.jpg);
  background-position: center center;
  background-size: cover;
  height: 483px;
}
.together img {
  position: absolute;
  z-index: -2;
  width: 100%;
}
.together p{
  font-style: italic;
  color: rgb(255, 255, 255);
  font-size: 48px;
  text-align: center;
  width: 893px;
  height: 228px;
  margin: 0 auto;
  padding-top: 40px;
  line-height: 100px;
  font-weight: 500px;
}
.introducing {
  width: 100%;
  height: 604px;
  text-align: center;
}
.img_logo{
  position: absolute;
  top:2100px;
  left: 150px;
}
.introducing .first_p {
  height: 110px;
  font-size: 32px;
  text-align: left;
  width: 930px;
  margin-top: 92px;
  margin-left: 300px;
  color: #fff;
}
.introducing .next_p {
  height: 140px;
  width: 1220px;
  text-align: left;
  font-size: 32px;
  color: #fff;
  padding-left: 150px;
  padding-top: 30px;
}
h3 {
  width: 100%;
  height: 75px;
  font-size: 64px;
  color: #00ffd9;
  padding-top: 48px;
}
.team {
  position: relative;
  background-image: url(listia_rastenie_zelenyj_123177_1920x1080.png);  
  width: 100%;
  margin: 0 auto;
  z-index: -2;
}
h4 {
  padding-top: 70px;
  text-align: center;
  font-weight: 500;
  font-size: 64px;
  line-height: 75px;
  color:#00ffd9;
}
.personal {
  padding-top: 70px;
  display: flex;
  flex-wrap: wrap;
  width: 100%;
}
.workers {
  text-align: center;
  flex-basis: 33%;
  padding: 24px;
  box-sizing: border-box;
  margin-bottom: 30px;
}
.names {
  margin: 0;
  margin-top: 12px;
  font-weight: 600;
  font-size: 24px;
  color: #00ffd9;
}
.roles {
  color: #fff;
  font-style: italic;
  font-size: 18px;
}
.end {
  display: flex;
  width: 100%;
  height: 176px;
  background-color:rgb(73, 73, 73);
  box-shadow: 0px 0px 10px 5px rgb(0, 0, 0);
}
.prob {
  width: 540px;
  height: 64px;
  margin: 0 auto;
  align-self: center;
}
.prob p {
  color: #fff;
  font-weight: 400;
  font-style: normal;
  text-align: center;
  size: 18px;
}
@media screen and (max-width:608px) {
  .topnav span.thg {
    display:none;
  }
  .topnav .header__helper {
    display: none;
  }
  .header__logo {
    margin-left: 30px;
  }
  nav {
    width: 100%;
  }
}
::-webkit-scrollbar {
  width:10px;
}
::-webkit-scrollbar-track {
  background: #3d3d3d;
}
::-webkit-scrollbar-thumb {
  background: #00885b;
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: #009b67;
}