@import url('https://fonts.googleapis.com/css2?family=Roboto&display=swap');

* {
    font-family: "Roboto", sans-serif;
    padding: 0;
    margin: 0;
}

div {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    #time {
        font-size: xx-large;
    }
}

#btn {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    text-align: center;
}

footer button {
    width: 50%;
    float: left;
    background-color: #a2a2a2;
    color: black;
    border: none;
    padding-top: 2.5%;
    padding-bottom: 2.5%;
    font-size: larger;
}

nav {
  position: fixed;
  top: 0;
  width: 100%;
  ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #a2a2a2;
  }

  ul li {
    float: left;
    padding: 14px 16px;
    text-align: center;
  }

  ul li #right{
    float: right;
    padding: 14px 16px;
    text-align: center;
  }

  ul li a {
    display: block;
    color: black;
    text-align: center;
    text-decoration: none;
  }
}