html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  background: #f0f0f0;
  color: #fff;
  line-height: 1.3;
}


#particles {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.intro {
  position: absolute;
  left: 0;
  top: 50%;
  padding: 0 0px;
  width: 100%;
  text-align: center;     margin-top: -350px !important;
}
h1 {
  text-transform: uppercase;
  font-size: 85px;
  font-weight: 700;
  letter-spacing: 0.015em;
}

p {
  margin: 0 0 30px 0;
  font-size: 24px;
}
.btn {
  display: inline-block;
  padding: 15px 30px;
  border: 2px solid #fff;
  text-transform: uppercase;
  letter-spacing: 0.015em;
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  text-decoration: none;
  -webkit-transition: all 0.4s;
     -moz-transition: all 0.4s;
       -o-transition: all 0.4s;
          transition: all 0.4s;
}
.btn:hover {
  color: #005544;
  border-color: #005544;
}

@media only screen and (max-width: 1000px) {
  h1 {
    font-size: 70px;
  }
}

@media only screen and (max-width: 800px) {
  h1 {
    font-size: 48px;
  }
  h1::after {
    height: 8px;
  }
}

@media only screen and (max-width: 568px) {
  /*.intro {
    padding: 0 10px;
  }*/
  h1 {
    font-size: 30px;
  }
  h1::after {
    height: 6px;
  }
  p {
    font-size: 18px;
  }
  .btn {
    font-size: 16px;
  }
}

@media only screen and (max-width: 320px) {
  h1 {
    font-size: 28px;
  }
  h1::after {
    height: 4px;
  }
}