* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

header {
    background-color: black;;
    width: 100%;
    color: #fff;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
}

header a {
    color: whitesmoke;
    margin-left: 10px;
    text-decoration: none;
    font-family: Arial, Helvetica, sans-serif;
}

header a:hover {
    color: #dea5ff;
    transition: 200ms;
}

header span a {
    color: whitesmoke;
    align-items: center;
    margin-left: 30px;
    text-decoration: none;
}

header span a:hover {
    color: #dea5ff;
    transition: 200ms;
}

body {
    background:#a692ff;
    font-family: Arial, Helvetica, sans-serif;
    height:100%;
    }
    
    .container {
    max-width: 800px;
    width: 100%;
    margin: 30px auto;
    color: white;
    text-align:center;
    }
    
    h1, h2, h3 {
      font-family: 'Roboto', sans-serif;
      font-weight: 300;
      font-size: 2.9rem;
      margin: 20px;
    }
    
    #seconds, #tens{
      font-size:2em;
    }
    
    button{
    background:transparent;
    color:white;
    border: solid 2px white;
    text-decoration:none;
    border-radius: 5px;
    margin-top: 20px;
    margin-right: 1rem;
    cursor:pointer;
    width:150px;
    height: 50px;
    outline: none;
    }
    
    button:hover {
      background:white;
      color:#a692ff;
      font-weight: 800;
      text-transform: capitalize;
    }