* {
    box-sizing: border-box;
}

body {
    margin: 0;
}

p, a, h1, h2, h3, h4, h5, h6 {
    margin: 0;
    font-family: 'Trebuchet MS', Helvetica, sans-serif;
}

/*header {*/
/*    position: fixed;*/
/*    width: 100%;*/
/*    height: 4rem;*/
/*    top: 0;*/
/*    left: 0;*/
/*    right: 0;*/
/*    z-index: 100;*/
/*}*/

.header-link {
    text-decoration: none;
}

.main-content {
    margin-top: 4rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .main-content {
        margin-top: 3rem;
    }
}