body {
background-color: #5c8ca8;
font-family: 'Segoe UI', sans-serif;
margin: 0;
padding: 0;
}

.container {
            text-align: center;
            padding-top: 40px;
        }
        h1 {
            color: #fff;
            font-size: 3em;
            margin-bottom: 0.2em;
        }
        h3 {
            color: #fff;
            font-weight: 400;
            margin-bottom: 2em;
        }
.lab-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            max-width: 900px;
            margin: 0 auto 40px auto;
        }
        .lab-btn {
            flex: 1 0 120px;
            max-width: 120px;
            background: rgba(255,255,255,0.3);
            border: none;
            padding: 15px 30px;
            color: #fff;
            font-size: 1.1em;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.2s;
            text-decoration: none;
        }
        .lab-btn:hover {
            background: rgba(255,255,255,0.5);
        }

img {
border-radius: 3px;
border-style
p.outset {border-style: outset;}
}