styles.css

body {
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    background-color:rgb(222, 227, 180);
}
h1{
    color: black;
    padding-left: 5rem;
    justify-self: center;
}
#countdown-form{
    font-size: xx-large;
}
#countdown-date{
      font-size: 2rem;
      margin: 3rem;
      background-color:rgb(172, 223, 223);
}
.box{
    border-color: rgb(18, 18, 17);
    font-size: larger;
    border-style:ridge;
    border-radius: 5%;
    padding-left: 4rem;
    padding-right: 5rem;
    padding-top: 5rem;
    padding-bottom: 5rem;
    background-color: rgb(188, 126, 126);
    color: rgb(4, 4, 4);
}


form {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 2rem;

}
.date{
    font-size: xx-large;
}

input[type="datetime-local"] {
    margin-bottom: 10px;
}

button {
    padding: 5px 10px 10px;
    text-align: center;
    font-size: x-large;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    background-color: #77e760;
    color: black;
}

button:hover {
    background-color: #16981a;
    color: white;
}
#countdown-display{
    font-size: xx-large;
    color: rgb(15, 17, 16);
    border-radius: 5%;
    border-color: black;
    padding-left: 1rem;
    padding-right: 1rem;
    padding-top: 1rem;
    padding-bottom: 1rem;
    border-style: outset;
    background-color: rgb(183, 236, 236);
    margin-top: 1rem;
}