*{
    box-sizing: border-box;
}

body{
    margin: 0px;
        /* padding-bottom: 50px; */
        display:flex;
        flex-direction:column

}

main{
    margin: 40px;
}

h1{
    text-align: center;
}

h2{
    text-align: center;
}

h3 {
    text-align: center;
}

#navbar{
    width: 100%;
    overflow: auto;
}

#navbar a{
    text-decoration: none;
    color: hsl(0, 0%, 18%);
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    padding: 15px;
    display: block;
    text-align: center;
    font-size: 1.5em;
    float: left;
    background-color:hsl(0, 0%, 67%);
    width: 100%;
    margin-bottom: 10px;
}

#navbar a:hover{
    background-color:  hsl(154, 100%, 82%);
}

figure {
    border: 2px solid hsl(0, 0%, 0%);
    margin: 10px auto;
    width: 80%;
}

img {
    width: 100%;
}

figcaption{
    text-align: center;
}

footer{
    text-align: center;
    bottom: 0;
    width: 100%;
    margin-top: auto;
    flex: 0 0 50px;
}

#footer{
    position: fixed;
    padding: 20px;
}