*{
    margin: 0;
}
main{
    background: linear-gradient(to top,blue,yellow,green);
}
header{
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
   z-index: 100vh; 
    color: white;
    text-align: center;
    font-size: 2pc;
    background:linear-gradient(to bottom,green,red,blue) ;
    padding: 1pc;
}
footer{
    text-align: center;
    font-size: 20px;
    color: white;
    padding: 1pc;
    background: linear-gradient(to bottom,blue,red,green);
}
fieldset{
    color:blue;
    border-radius: 8px;
    border: none;
    padding: 2pc;
    width: 800px;
    height: 900px;
    background: linear-gradient(to bottom,blue,yellow,green);
margin-left: 350px;
}
a{
    text-decoration: none;
    font-size: 20px;
    color: white;
}
button{
    width: 20pc;
    padding: 1pc;
    border: none;
    border-radius: 8px;
    font-size: 20px;
    margin-left: 4pc;
    color: white;
    background-color: green;
}