estilos.css

/* BODY DA PÁGINA */
body {
    font-family: 'Franklin Gothic', sans-serif;
    background-color: #1f1f1f;
    color: #fff;
}

.title {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-weight: bold;
}

/* Retangulo do relógio */
.rectangle {
    width: 400px;
    height: 100px;
    margin: auto;
    margin-top: 100px;
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0px 0px 10px #888888;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Seq da página index */
.container {
	height: 100vh;
	display: flex;
	flex-direction: column;
	justify-content: center;
}

.button {
	background-color: #00bcd4;
	color: #1f1f1f;
	font-weight: bold;
	border: none;
	border-radius: 20px;
	padding: 10px 20px;
	margin-top: 100px;
	cursor: pointer;
	box-shadow: 0px 0px 10px #888888;
}

p {
	font-size: 18px;
	font-weight: bold;
}

/* clock */
#clock {
    color: #1f1f1f;
  }