header {
     overflow: auto;
     border-bottom: 5px solid #7d97ad;
}

 img {
     border-radius: 10px;
}

 body {
     background-color: #D3D3D3;
}

 figure {
     margin: 0;
}

 footer {
     border-top: 5px solid #7d97ad;
     margin-top: 20px;
     text-align: center;
}

 [class*="zocial-"]:before {
     display: inline-block;
     font-family: 'zocial', sans-serif;
     text-shadow: 3px 3px 3px #aaa;
     width: 2em;
     margin-left: -30px;
     text-align: center;
}

 .zocial-github {
     font-weight: bold;
}

 .main-image, 
 .appify-image,
 .sunflower-image,
 .bokeh-image,
 .selfie-image {
     margin-top: 10px;
     width: 100%;
}

 .appify,
 .sunflower,
 .bookeh {
     text-align: center;
     margin-left: auto;
     margin-right: auto;
     width: 100%;
}

 .udacity-logo {
     width: 10%;
     float: left;
     margin-top: 15px;
}

 .header-text {
     color: #2d3c49;
     float: right;
}

 .header-description {
     text-align: right;
}

 .nav {
     width: 100%;
     margin-left: auto;
     margin-right: auto;
}

 .nav-list {
     list-style: none;
     width: 100%;
     padding: 0;
     margin: 0;
}

 .nav-item {
     box-sizing: border-box;
     display: inline-block;
     white-space: nowrap;
     width: 24%;
     text-align: center;
     line-height: 24px;
     padding: 20px;
     text-transform: uppercase;
}

 .nav a {
     text-decoration: none;
     color: #616161;
     padding: 1.5em;
}

 .nav a:hover {
     text-decoration: underline;
     color: #212121;
}

 .header {
     box-shadow: 0 2px 5px rgba(0, 0, 0, 0.26);
     min-height: 56px;
     transition: min-height 0.3s;
}

 .caption {
     font-weight: bold;
}

 .project-content {
     display: flex;
     flex-wrap: wrap;
}

 .header-menu {
     display: none;
}

 #featured-work-heading,
 #about-heading {
     display: inline-block;
     margin-bottom: 0;
}

 .about-me {
     font-size: 16px;
     text-align: justify;
     width: 100%;
}

 .social-header {
     text-decoration: underline;
}