h1 {
    color:red;
}

 a {
    border:solid red 2px; 
    background:orange;
}

 a:hover {
    border:solid blue 2px; 
    background:lightblue;
}

#cuadrado {
    border:solid green 4px;
    background:lime;
    width:100px;
    height:100;
    position:absolute;
    top:0;
    left:0;
    margin:0;
    transition: all 1s ease;
}

#cuadrado.animated {
    margin-left:600px;
    margin-top:300px;
    border-color:purple;
    background-color:#FF00FF;
}