body {
  background: url("/2º Asir/background.jpg") no-repeat center center fixed;
  background-size: cover;
}

div {
  margin: 200px;
  border: 5px solid black;
  border-radius: 10px;
 /* background: white;*/
  background: rgba(76, 175, 80, 0.3);
  }
  

h1 {
  text-align: center;
}

img{
display:block;
margin:auto;
}

ul {
  list-style-type: none;
  margin-top: 20px;
  margin-left: 150px;
  margin-right: 150px;
  padding: 0;
  overflow: hidden;
  background-color: orange;
}

li {
  float: left;
  margin-left: 50px;
  margin-right: 50px;
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

li a:hover {
  background-color: black;
}

table{
  margin: auto;
  width: 60%;
  }


  table td {
       text-align: center;
       margin-left: 90px;
       margin-right: 90px;
       height: 250px;
       width: 25%
       } 
       
       table td p{
         text-align: left;
         }
         
  footer{
    background-color: yellow;
    margin-left: 150px;
    margin-right: 150px;
    /*opacity: 0.6;*/
    }
  
  
  footer p{
    text-align: center;
    
    }
    
    #html{
      background-color: red;
      }
      
    #css{
        background-color: blueviolet;
        }
        
    #js{
      background-color: yellow;
      }