body{
    background: white;
    background-image: url("https://www.w3schools.com/w3css/img_lights.jpg");
    background-attachment: fixed;
}
div{
    background-color: white;
    border: 10px solid blue;
    width: 70%;
}
h1{
    text-align: center;
    font-family: arial;
    font-size: 36px;
    color: green;
    font: italic bold;
    text-decoration: underline overline dotted red;
}
ul{
    list-style-type: square;
    list-style-position: inside;
}
a:link{
    color: red;
}
a:hover{
    background-color: yellow;
}
a:active{
    color: orange;
}
a:visited{
    color: blue;
}
#pic1{
    max-height: 100%;
    max-width: 100%;
}
#pic2{
    height: 100%
    width: 100%
}