h1, h2, h3 {
 font-family: Lobster, Cambria, "Times New Roman", serif;

}
body {
   font-family: "Open Sans", Verdana, Arial, sans-serif;
   font-size: 100%;
   background-color: #E8EAF6;
}
nav ul {
     list-style: none;   
    padding-left: 1.5em;
}
nav li {
    list-style: none;
    margin: 0.5em 0;
    padding: 0;
}
nav li a:link {
    color: #F48FB1;
}

header {
   background: #1A237E;
   color: white;
   flex-basis: 100%;
}
footer {
   background: #1A237E;
   color: white;   
   flex-basis: 100%;
}

/* parent container */
.container {
   display:flex;
   flex-wrap: wrap;
    justify-content: space-between;
    align-items:stretch;
}

/* left column */
nav {   
   color: white;
    background: #3F51B5;
    flex: 1 0 7em;
    margin: 0.5em 0 0.5em 0;    
}
/* right column */
aside {
   background: #9FA8DA;
    flex-grow: 1;
    flex-basis: 10em;
    margin: 0.5em 0 0.5em 0;

}


/* middle column */
main {
   margin: 0.5em;
   background: white;
}

/* add nested flexbox within main */
main {
    flex: 1 0 500px;
}
.media {
    display: flex; 
    align-items:flex-start;
    margin: 0.5em;
}
.media-image {
     margin-right: 0.5em;   
}
.media-body {
    padding: 0.25em;
}


/* add nested flexbox within aside */
aside h3 {
    text-align: center;
}
section img {
    max-width: 100%;
}
.browse {
   justify-content: space-around;
}
.browse div {
    margin: 0.25em;
}