h1, h2, h3, h4 {
  margin-top: 0;
}
header > h1 {
  background-color: #FFFFFF;
  background-image: url(../images/awesomeco_logo_mobile.png);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  border-bottom: 1px solid #300;
  margin-bottom: 0;
  height: 70px;
  text-indent: -9999px; /* off the screen, but still visible to search engine bots and screen readers to read the h1 tag */
}
nav > ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
nav > ul > li {
  border: 1px solid #333;
  border-radius: 5px;
  margin: 10px auto;
  text-align: center;
  width: 90%;
}
nav a {
  background-color: #600;
  color: #FFF;
  display: block;
  text-decoration: none;
}
#wrapper {
  background-color: #BC7277;
}
main {
  background-color: #FFF;
  border-radius: 5px;
  margin: 0 auto;
  padding: 1%;
  width: 88%;
}
main > img {
  max-width: 100%;
  height: auto;
}
footer {
  color: #FFF;
  text-align: center;
}
@media only screen and (max-width: 609px) {
  h1, h2, h3, h4 {text-align: center;}
  main > img {
    display: block;
    margin-left: auto;
    margin-right: auto;
  }
  #wrapper {
    min-width: 180px;
  }
}
@media only screen and (min-width: 610px) {
  header > h1 {
    background-image: url(../images/awesomeco_logo.png);
    background-size: auto;
    height: 100px;
  }
  main > img {
    float: left;
    margin-right: 1%;
  }
  main ul {
    overflow: hidden; /* establishes block formatting context, allows the list items to stay inline instead of wrapping around the image */
  }
}
@media only screen and (min-width: 610px) and (max-width: 959px) {
  nav {
    text-align: center;
  }
  nav > ul > li {
    display: inline-block;
    width: 20%;
  }
}

@media only screen and (min-width: 960px) {
  #wrapper {
    margin: 0 auto;
    width: 80%;
    border-radius: 5px;
    box-shadow: 5px 5px 5px #555;
    overflow: hidden;
  }
  header > h1 {
    background-position: left;
  }
  nav {
    float: left;
    width: 15%;
  }
  main {
    margin-left: 15%;
    border-radius: 0;
    width: 83%;
  }
  body {
    background-color: #DDD;
    background-repeat: no-repeat;
    background-image: linear-gradient(to bottom, #888, #DDD);
  }
}