.image2 {
    background-color: aliceblue;
    height:100px;
    width:300px;
  
}
.unknown1 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.image {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.unknown {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.image1 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.ds {
    background-color: aliceblue;
    height:100px;
    width:200px;
    
}

.cat1 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.tallcat {
    background-color: aliceblue;
    height:300px;
    width:100px;
    
}

.cat2 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.cat3 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.cat4 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.cat5 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.cat6 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.bird {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.bird2 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}
.bird3 {
    background-color: aliceblue;
    height:100px;
    width:100px;
    
}

.bird4 {
    background-color: aliceblue;
    height:150px;
    width:150px;
    
}
.bird5 {
    background-color: aliceblue;
    height:150px;
    width:150px;
    
}
.reptile {
    background-color: aliceblue;
    height:200px;
    width:200px;
    
}
.reptile2 {
    background-color: aliceblue;
    height:200px;
    width:200px;
    
}
.reptile3 {
    background-color: aliceblue;
    height:200px;
    width:200px;
    
}
.reptile4 {
    background-color: aliceblue;
    height:200px;
    width:200px;
    
}
#
.home {
    background-color: aqua;
    height:200px;
    width: 800px;
}

html { 
  background: url(tab.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}


@media screen and (max-width:600px){
    .class {
        background: url(back.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover; 
        
    }
}