html, body {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  padding-top: 50px;
}

header {
  background-color: #00ff00;
  padding-top: 20px;
  min-height: 100%;
}

section {
    min-height: 100%;
    padding-top: 24px;
}

#bio .avatar {
    background-image: url('../img/RIck_Sanchez.gif');
    background-repeat: no-repeat;
    background-size: cover;
    border-radius: 50%;
    height: 200px;
    width: 200px;
}

footer {
    text-align: center;
}

footer ul li {
    list-style-type: none;
    text-align: center;
    display: inline-block;
    padding-right: 6px;
}

@media (min-width: 768px){

    nav.navbar.navbar-inverse.navbar-fixed-top {
      border-bottom-color: #2980b9;
    }
    .navbar-inverse .navbar-nav>li>a {
        color: #2980b9;
        transition: all 250ms ease-in-out;
     }

     .navbar-inverse .navbar-nav>li>a:hover {
       color: green;

      }

     .navbar-inverse .navbar-nav>li>a:visited {
       color:;

     }

  header {
      background-color: #00b2b3;
  }

  section {
    min-height: 100%;
    padding-top: 48px;
  }

  #bio .avatar {
      background-image: url('../img/Rick_Drunk.png');
      background-repeat: no-repeat;
      background-size: cover;
      border-radius: 10%;
      height: 200px;
      width: 200px;
  }

footer {
      text-align: left;
}

  footer ul li {
      padding-left: 6px;
      float: right;
  }

}