style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
#background{
    background-image: linear-gradient(to right, red , yellow);
}
body{
    font-family: "Lato", sans-serif;
    background: linear-gradient(-65deg, rgba(170,110,36,1) 31%, rgba(236,168,20,1) 68%);
}
h2{
    font-size: 5rem;
    font-weight: bold;
    padding: 1rem;
}
.countdown{
    min-height: 100vh;
    display: flex;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    text-align: center;
}
.center-text{
    display: flex;
    align-items: center;
    flex-direction: column;
}
.count-down{
    display: flex;
    justify-content: space-around;
}
.day,.hour,.minute,.second{
    font-size: 3rem;
}
.time{
  font-size: 3rem;
}
.date{
  font-size: 1.5rem;
}
.einstein-button{
    background-color: rgba(236,168,20,1); /* Green */
    border: none;
    padding: 20px 50px;
    text-align: center;
    font-size: 20px;
    border-radius: 50px;
    opacity: 1;
    transition: 0.3s;
    font-weight: bold;
}
.einstein-button:hover{
    background-color: rgb(189, 122, 40);
}