@charset "UTF-8";

 /* Global styles */
article, aside, footer, header, main, nav, section {
  display: block;
}

html, body, h1, h2, h3, ul, li, a, p, 
article, aside, footer, header, main, nav, section {
  padding: 0;
  margin: 0;
}

 /*Header styles */
.banner {
  background-color: #11233b;
  color: white;
  padding: 10px 20px;
}

 /* Body styles */
body {
  width: 960px;
  margin-left: auto;
  margin-right: auto;
  background-color: #f0f0f0;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 15px;
}

 /* Navigation styles */
nav {
  background-color: #20416c;
  padding: 5px;
  margin-top: 1px;
}

 /* Page structure styles */
li a {
  color: white;
}

 /* Heading styles */
li {
  display: inline;
  margin-left: 15px;
  margin-right: 15px;
  font-size: 20px;
  font-variant: small-caps;
  font-weight: bold;
}

section {
  background-color: #bbbbbb;
  margin-top: 10px;
  padding: 5px;
}

article {
  background-color: white;
  margin-top: 5px;
  padding: 10px 15px;
}

main {
  width: 640px;
  float: left;
  margin-bottom: 10px;
}

aside {
  background-color: #bbbbbb;
  width: 270px;
  float: right;
  padding: 20px;
  margin-top: 10px;
}

footer {
  clear: both;
  background-color: #20416c;
  color: white;
  padding: 5px 20px;
}

.dropdown {
    display: none;
}

 /* for 980px or less */
    @media screen and (max-width: 980px) {

    aside {
        width: 30%;
    }

    }

    /* for 700px or less */
    @media screen and (max-width: 700px) {

    aside {
        width: auto;
        float: left;
    }

    }

    /* for 480px or less */
    @media screen and (max-width: 480px) {

    aside {
        display: none;
    }
    main {
        width: 100%;
        }
    header {
        width: 87%;
        }
    nav {
        display: none;
            }
    body {  
        width: 100%;
        }
    footer {
        width: 87%;
        }
    select {
        width: 100%;
        height: 30px;
        }
    .dropdown {
        display: inline;
        }
    .dropup .dropdown-menu {
    top: auto;
    bottom: 35% !important;
    margin-left: 15px;
    margin-bottom: 1px;
        }
    }