*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header{
    background-color: aqua;
    font-size: 40px;
}

h1{
    text-align: center;
    color: pink;
}

p{
    text-align: center;
}

h2{
    text-align: center;
    color: purple;
}
footer{
    background-color: lime;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
}
address{
    text-align: center;
}
nav{
    background-color: yellow;
    display: flex;
    justify-content: space-around;
    align-items: center;
}
article{
    margin-bottom: 100px;
}
a{
    color: blue;
    background-color: yellow;
    font-size: 40px;
}