html, body {
      margin: 0;
      padding: 0;
      background: #ebebeb;
    }
    body, button {
      font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    }

    p{
        color:dimgray;
    }

    h1 {
      padding-top: 50px;
    }
    h2{
        color:#445461;
    }
    img {
      max-width: 100%;
    }
    nav {
      position: fixed;
      z-index: 1;
      top: 0;
      left: 0;
      right: 0;
      background: #fff;
      background: rgba(255, 255, 255, 0.8);
    }
    nav li, nav ul {
      list-style: none;
      margin: 0;
      padding: 0;
      text-align: center
    }
    nav li, nav a {
      display: inline-block;
    }
    nav a {
      padding: 20px;
      color: #333;
      text-decoration: none;
    }
    a:hover {
      background: #fff;
    }
    a.active {
      background: #00AC7F;
      color: #fff;
    }
    .wrap {
      position: relative;
      max-width: 1000px;
      margin: 0 auto;
      padding: 50px 20px;
    }
    section {
      padding: 50px 0 30px 0;
    }
    footer {
      text-align: center;
    }
    button {
      font-size: 18px;
      border: 0;
      padding: 15px 30px;
      background: #00AC7F;
      color: #fff;
      cursor: pointer;
    }