index.css

* {
    -webkit-tap-highlight-color: rgba(0,0,0,0);
    -webkit-font-smoothing: antialiased;
    -Mac-osx-font-smoothing: grayscale;
    list-style-type: none;
    text-decoration: none;
    color: inherit;
    font-family: 'Rubik', sans-serif;
    margin: 0;
    padding: 0;
}
  
*:active, 
*:focus {
    outline: none;
}
  
h1 {
    margin: 0 0 10px;
    padding: 20px 0;
    text-align: center;
}
  
nav {
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
}
  
button {
    display: inline-block;
    padding: 20px 15px;
    background-color: white;
    border: none;
    font-size: 16px;
    cursor: pointer;
}