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

body {
   background-image: url('https://images.unsplash.com/photo-1549321495-305eb13f8aa9?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=1650&q=80');
   background-size: cover;
   background-position: center center;
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
   min-height: 100vh;
   font-family: 'Poppins', sans-serif;
}

h1 {
   font-size: 4rem;
}

.countdown-container {
   display: flex;
   width: min(90%, 500px);
   justify-content: space-around;
}

.big-text{
   width: 100px;
   display: flex;
   justify-content: center;
   align-items: center;
   font-size: 6rem;
   line-height: 1;
   margin: 0 2rem;
}

.countdown-el{
   text-align: center;
}

.countdown-el span{
   font-size: 1.25rem;
}