* {
  box-sizing: border-box;
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  font-size: 16px;
}

body {
  background-color: #000000;
  margin: 0;
}

.navtop {
  background-color: #000000;
  height: 55px;
  width: 100%;
  border: 0;
}
.navtop div {
  display: flex;
  margin: 0 auto;
  width: 1000px;
  height: 100%;
}
.navtop div h1, .navtop div a {
  display: inline-flex;
  align-items: center;
}
.navtop div h1 {
  flex: 1;
  font-size: 20px;
  padding: 0;
  margin: 0;
  color: #8400ff;
  font-weight: normal;
}
.navtop div a {
  padding: 0 20px;
  text-decoration: none;
  color: #00FF00;
  font-weight: bold;
}
.navtop div a i {
  padding: 2px 8px 0 0;
}
.navtop div a:hover {
  color: #ecf0f6;
}

main.content {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
}
main.content h2 {
  margin: 0;
  padding: 25px 0;
  font-size: 20px;
  font-weight: 500;
  border-bottom: 1px solid #ebebeb;
  color: #00ff00;
}

@media screen and (max-width: 1000px) {
  .navtop {
    height: auto;
  }
  .navtop div {
    flex-flow: wrap;
    width: 100%;
  }
  .navtop div h1 {
    display: block;
    flex-basis: 100%;
    padding: 15px 10px;
  }
  .navtop div > a {
    padding: 10px;
    font-size: 14px;
    font-weight: 600;
    flex-basis: 100%;
    background-color: #000000;
    border-bottom: 1px solid #7100FF;
  }

  main.content {
    padding: 10px;
  }

  .responsive-width-100 {
    width: 100%;
    max-width: 100%;
    min-width: 100%;
  }
}