.heading {
    display: flex;
    justify-content: center;
}
h1 {
    font-size: 60px;
    background-color: rgba(239, 232, 221, 0.8);
    padding: 20px;
    border: 3px solid black;
    border-radius: 10px;
    font-family: 'Montserrat', sans-serif;
    color: #503b20;
}
body {
    background-image: url(christmas.jpeg);
    background-repeat: no-repeat;
    background-position: center center;
    background-attachment: fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;
}
.container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}
.christmas {
    background-color: rgba(239, 232, 221, 0.8); 
    height: 300px;
    width: 200px;
    margin-top: 50px;
    border: 3px solid black;
    border-radius: 20px;
}
.block {
    display: flex;
    flex-direction: column;
    align-items: center;
}
h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 30px;
}
.days, .hours, .minutes, .seconds {
    font-family: 'Montserrat', sans-serif;
    font-size: 40px;
}
.red {
    font-size: 60px;
    border: none;
    font-family: 'Staatliches', cursive;
    color: red;
}
button {
    border: none;
    border-radius: 50px;
    background-color: rgba(239, 232, 221, 0.8);
}

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 50% 50%;
    z-index: -1;
    }



@media all and (max-width: 800px) {
    h1, .red {
        font-size: 40px;
    }
    .christmas {
        height: 180px;
        width: 130px; 
    }
    h3 {
        font-size: 20px;
    }
    .days, .hours, .minutes, .seconds {
        font-size: 30px;
    }
}

@media all and (max-width: 500px) {
    h1, .red {
        font-size: 20px;
    }
    .christmas {
        height: 140px;
        width: 70px; 
    }
    h3 {
        font-size: 13px;
    }
    .days, .hours, .minutes, .seconds {
        font-size: 18px;
    }
    img {
        width: 50px;
    }
}