*{
  text-align: center;
  text-align:center;
  display:block;
  background-color: black;
} 

h1 {
color: red;
}

a {
border: solid 1px red;
color: black;
background-color: red;
text-decoration: none;
padding: 0.5rem;
}

.header {
    background: linear-gradient(rgba(0,0,0, .1), rgba(0,0,0, .4)), 
        url('./IMG_0139.gif');
    height: 100vh;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    font-size: var(--font-size-normal);
}