horizontal center

by Pradeep Kumar

HTML

<body>

    <div class="fixed-header">
       <nav>
         <a href="index.html">HOME</a>
         <a href="projects.html">PROJECTS</a>
         <a href="about.html">ABOUT</a>
       </nav>
    </div>

    <div class="fixed-footer">
     <a href="https://steamcommunity.com/id/kumo99">Made by Kumo © 2018</a>
    </div>

    <div class="group-content">
       <div class="content">
         <img src="https://i.imgur.com/KPHMNie.png">
         <h3>Arma 3: Exile Server</h3>
         <p>A project for improving the exile mod.</p>
       </div>

       <div class="content">
         <img src="https://i.imgur.com/KPHMNie.png">
         <h3>Reserved Space</h3>
         <p>Reserved space for future projects</p>
       </div>

       <div class="content">
         <img src="https://i.imgur.com/KPHMNie.png">
         <h3>Reserved Space</h3>
         <p>Reserved space for future projects</p>
       </div>

       <div class="content">
         <img src="https://i.imgur.com/KPHMNie.png">
         <h3>Reserved Space</h3>
         <p>Reserved space for future projects</p>
       </div>

       <div class="content">
         <img src="https://i.imgur.com/KPHMNie.png">
         <h3>Reserved Space</h3>
         <p>Reserved space for future projects</p>
       </div>

       <div class="content">
         <img src="https://i.imgur.com/KPHMNie.png">
         <h3>Reserved Space</h3>
         <p>Reserved space for future projects</p>
       </div>
     </div>

     </body>

CSS

body {
            background-color: #323232;
            padding: 0;
            margin: 0;
            font-family: Lato;
        }
        
        nav a {
            color: #fff;
            text-decoration: none;
            padding: 20px 25px;
            display: inline-block;
        }
        
        .fixed-header,
        .fixed-footer {
            background: #333;
            color: #fff;
            width: 100%;
            position: fixed;
            text-align: center;
            z-index: 10;
            background-color: #202020;
        }
        
        .fixed-header {
            top: 0;
        }
        
        .fixed-footer {
            bottom: 0;
            padding: 20px 0px;
        }
        
        .fixed-header a:hover {
            color: #c1c1c1;
        }
        
        .fixed-footer a {
            color: #fff;
            font-weight: lighter;
            text-decoration: none;
        }
        
        .group-content {
            max-width: 960px;
            text-align: center;
            margin: auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-evenly;
        }
        
        .group-content h3 {
            margin-top: 10px;
            font-weight: normal;
            font-size: 20px;
            color: white;
        }
        
        .group-content p {
            margin-top: 3px;
            font-weight: lighter;
            font-size: 20px;
            color: white;
        }
        
        .content {
            width: 30%;
            background-color: #202020;
            display: flex;
            flex-direction: column;
            padding: 20px 0 20px 0;
            align-items: center;
            margin-top: 20px;
        }
        
        .content>* {
            max-width: 200px;
            text-align: center;
            margin: 0;
        }