style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
#heading{
    height: 200px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgb(18, 7, 66);
    font-size: 30px;
    color: white;
}
#container{
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items:center;
    margin-left: 20px;
    margin-right: 20px;
    gap: 5px;
    margin-top: 20px;
}
img{
    height: 200px;
    width: 200px;
    border-radius: 50%;
}
.card{
    text-align: center;
    border: 2px solid black;
    padding: 20px;
}
#number{
    margin-top: 10px;
}
#users{
    margin-top: 10px;
    text-align: center;
}
input{
    margin-right: 8px;
    padding: 3px;
    width: 12rem;
}
button{
    height: 1.7rem;
    border-radius: 0.6rem;
    width: 7rem;
    font-weight: 700;
    background-color: brown;
    columns: white;
    cursor: pointer;
}
#number{
    text-align: center;
}