body{
    background-color: #1a1a1e;
    color: white;
    margin: 0;
}

header{
    top:0;
    padding: 1rem;
    background-color:cornflowerblue;
    text-align: center;
    width: 100%;
    align-content: center;
}

button{
    background-color: #1a1a1e;
    padding: 1rem;
    margin: 0.5rem 1rem 0.5rem 0;
    box-sizing: border-box;
    color: white;
    border-radius: 1rem;
}
header > h1{
    display: inline;
    margin: auto;
}
header > div {
    float: right;
    margin-right: 1rem;
}

a{
    color:cornflowerblue;
    font-weight: normal;
}
a:hover{
    font-weight: bold;
}

a:visited{
    color: coral;
}