* {
    margin: 0;
    padding: 0;
}
body {
    background-color: rgb(90, 232, 232);
    justify-content: center;
    align-items: center;
    display: flex;
    height: 100vh;
}
.counter {
    height: 250px;
    width: 300px;
    border: 2px solid white;
    border-radius: 10px;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: #ebeaea;
    box-shadow: 0 8px 25px;
}
#heading {
    margin: 40px;
    box-shadow: 2px 4px 20px;
}
.btn {
    margin: 6px;
    margin-top: 40px;
    font-size: medium;
    padding: 3px;
}
.btn:hover {
    background-color: rgb(50, 255, 255);
    box-shadow: 0 8px 25px;
}