newbie css exercise for session 16

Author: adolivaresl

exercises/css-missing-slice/README.md

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+---
+difficulty:
+  - newbie
+OAs:
+  - css selectors
+  - flex-box
+projects:
+  - data lovers
+  - social network
+---
+
+# CSS Missing Slice
+
+[https://cssbattle.dev/play/6](https://cssbattle.dev/play/6)
+
+![CSS Missing Slice](css-missing-slice.png)
+
+__Objetivo__
+
+Escriba el HTML/CSS en el editor para replicar la imagen objetivo de la derecha.
+
+__Código de base__
+
+```html
+    <div></div>
+    <style>
+      div {
+        width: 100px;
+        height: 100px;
+        background: #dd6b4d;
+      }
+    </style>
+```

exercises/css-missing-slice/README.pt-BR.md

@@ -0,0 +1,33 @@
+---
+difficulty:
+  - newbie
+OAs:
+  - css selectors
+  - flex-box
+projects:
+  - data lovers
+  - social network
+---
+
+# CSS Missing Slice
+
+[https://cssbattle.dev/play/6](https://cssbattle.dev/play/6)
+
+![CSS Missing Slice](css-missing-slice.png)
+
+__Objetivo__
+
+Escreva o HTML/CSS no editor para replicar a imagem de destino à direita.
+
+__Código base__
+
+```html
+    <div></div>
+    <style>
+      div {
+        width: 100px;
+        height: 100px;
+        background: #dd6b4d;
+      }
+    </style>
+```