diff --git a/css/style.css b/css/style.css
new file mode 100644
index 0000000..090513f
--- /dev/null
+++ b/css/style.css
@@ -0,0 +1,95 @@
+body {
+    font-family: Arial, sans-serif;
+    margin: 0;
+    padding: 0;
+    background-color: #f9f9f9;
+    color: #333;
+}
+
+header {
+    position: relative;
+    background: url('../img/extern-bureaublad-1024x638-1.webp') no-repeat center center;
+    background-size: cover;
+    color: white;
+    padding: 40px 20px;
+    text-align: center;
+}
+
+header::after {
+    content: "";
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background: rgba(0, 0, 0, 0.5);
+    z-index: 1;
+}
+
+header h1, header p {
+    position: relative;
+    z-index: 2;
+}
+
+header h1 {
+    margin: 0;
+    font-size: 2.5em;
+}
+
+nav {
+    background-color: #07AAF9;
+    padding: 10px 0;
+    text-align: center;
+}
+
+nav a {
+    color: white;
+    text-decoration: none;
+    margin: 0 15px;
+    font-weight: bold;
+}
+
+nav a:hover {
+    text-decoration: underline;
+}
+
+main {
+    padding: 20px;
+    max-width: 1200px;
+    margin: 0 auto;
+}
+
+section {
+    background: white;
+    border: 1px solid #ddd;
+    border-radius: 8px;
+    padding: 20px;
+    margin-bottom: 20px;
+    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
+}
+
+section h2 {
+    color: #07AAF9;
+    margin-top: 0;
+}
+
+footer {
+    background-color: #2D2E43;
+    color: white;
+    text-align: center;
+    padding: 10px 0;
+    margin-top: 20px;
+}
+
+.container {
+    display: flex;
+    gap: 50px;
+}
+
+.upstreamcon {
+    border: 2px solid #07AAF9;
+    border-radius: 8px;
+    padding: 10px;
+    width: 45%;
+    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
+}
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