body{
    text-align: center;
    padding: 100px;
    background-color: blue;
}
div{
    width: 900px;
    max-width: 95%;
    margin: 0 auto;
}
.img-max{
    min-width: 200px;
    height: auto;
    width: 50%;
}
.img_max2{
    min-width: 300px;
    height: auto;
    width: 50%; 
}
header{
    background-color: black;
}
nav{
    text-align: left;
}
article{
    background-color: black;
}
h1{
    color: aliceblue;
}
h2{
    color: aliceblue;
}
h3{
    color: aliceblue;
}
p{
    color: aliceblue;
}
footer{
    background-color: black;
}
a{
    color: aliceblue; 
}