body {
    background-color: rgb(240, 156, 170);
    

}
h1 {
    color: rgb(96, 218, 14);
    font-size: 100px;
    text-align: center;
    text-shadow: 10px 10px 10px rgb(15, 83, 230);
    margin-bottom: 10px;
}
p {
    color: blue;
}
p.subheading {
    font-size: 30px;
    text-align: center;
    margin-top: 10px;
    margin-bottom: 60px;
}

div.main {
    background-color: lightblue;
    width: 75%;
    margin: auto;
    margin-bottom: 50px;
    padding: 30px;
    
    border-color: purple;
    border-style: solid;
    border-width: 8px;
    border-radius: 20px;
    box-shadow: 10px 10px 10px black;
}

nav {
    background-color: aqua;
<a>}
 {
    background-color: blueviolet;
    padding: 10px;


position: fixed;
top: 0;
left: 0;
width: 100%;

}
a{
    display: inline-block;
    background-color: darkorchid;
    color: white;
    padding: 10px;
    margin: 5px;
    border-radius: 5px;
    text-align: none;

    transition-duration: 300ms;
}
body {
    background-color: pink;
}
h1 {
    color: red;
    font-size: 100px;
    text-align: center;
    text-shadow: 10px 10px 10px black;
    margin-bottom: 10px;
}
p {
    color: blue;
}
p.subheading {
    font-size: 30px;
    text-align: center;
    margin-top: 10px;
    margin-bottom: 60px;
}

div.main {
    background-color: lightblue;
    width: 75%;
    margin: auto;
    margin-bottom: 50px;
    padding: 30px;
    
    border-color: purple;
    border-style: solid;
    border-width: 8px;
    border-radius: 20px;
    box-shadow: 10px 10px 10px black;
}