main.css

html {
    background-image: linear-gradient(90deg, #fc8f08, yellow);
    -webkit-font-smoothing: antialiased;
}


/* header */

header {
    background: white;
    box-shadow: 0 0 2px rgba(0, 0, 0, 0.06);
    font-size: 1em;
    margin: 0.6rem auto;
    max-width: 60em;
    padding: 2em 2em 4em;
    overflow: hidden;
}

.header-title{
    float: left;
    max-width: 28em;
    background: lightblue;
    /*border: 1px solid black;*/
}

.header-img{
    float: left;
    max-width: 30em;
    height: 16em;
    background: white;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 300;
    text-align: center;
}


header img {
    background: transparent;
    border: 5px solid black;
    max-width: 95%;
}

/* navbar styles */
.navbar{
    margin-bottom: 1em;
    overflow: hidden;
    background-color: #2f5d68;
}

.navbar a{
    float: left;
    display: block;
    color: white;
    padding: 1em 0.5em 1em 0.5em;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 300;
}

.navbar a:visited{
    color: lightblue; /* to make the links visible at all */
}

/* middler */

.middler {
    background: #2f5d68;
    font-weight: 300;
    font-size: 1em;
    line-height: 1.4;
    margin: 42px auto;
    max-width: 60em;
    padding: 2em 2em 2em;
}

.content-box{
    background-color: cornsilk;
    color: black;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    margin: 0 auto;
    border: 1px solid black;
    margin-bottom: 0.7em;
}


/* footer */

footer {
    background: darkcyan;
    width: 60em;
    margin: 0 auto;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
   
        
}
footer a {
    color: blue;
}

/* text formatting */

h1, h2, h3, h4, h5, h6 {
    color: black;
    font-family: "Comic Sans MS", Helvetica, Arial, sans-serif;
    font-weight: 600;
    line-height: 1.3;
}

h1{
    font-size: 3em;
}

h1, h2 {
    text-decoration: underline;
}

h2, p{
    margin-top: 1.3em;
    margin-left: 0.5em;
}

a:visited{
    color: #2f5d68;
}