mobile css implemented

src/style.css

@@ -97,3 +97,32 @@ video {
     margin: auto;
     display: block;
 }
+
+@media(max-width: 600px) {
+    body {
+        font-size: 14px;
+    }
+
+    .nav-inner, main, .footer-inner {
+        width: auto;
+        margin: 0 8px;
+    }
+
+    video {
+        width: 100%;
+        margin: auto;
+        display: block;
+    }
+
+    .siema-slider, .slide-item {
+        height: 300px;
+    }
+
+    .footer-inner {
+        flex-direction: column;
+    }
+
+    .footer-other {
+        text-align: left;
+    }
+}