body{

    margin: 0px;

}

main{

    margin-left: 20px;

    margin-right: 20px;

}

h1{

    text-align: center;

}

.navbar ul{

    list-style-type: none;

    background-color: hsl(0, 0%, 25%);

    padding: 0px;

    margin: 0px;

    overflow: hidden;

}

.navbar a{

    color: white;

    text-decoration: none;

    padding: 15px;

    display: block;

    text-align: center;

}

.navbar a:hover{

    background-color: hsl(0, 0%, 10%);

}

.navbar li{

    float: left;

}