Respuesta :

Answer:

#footer {

   border-top: 1px solid rgba(0, 0, 0, 0.3);

   background: rgba(0, 0, 0, 0.25);

   box-shadow: inset 0 1px rgba(255, 255, 255, 0.3);

   height: 40px;

}

Explanation:

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