*{
    margin: 0;
    padding: 0;
    font-family: Bitter, serif;
}
.top-pera{
    background-color: black;
    color: white;
    text-align: center;
    padding: 0.3rem;
}
.btn{
    font-weight: 400;
    width: 100px;
}
.img{
    margin-left: 4rem;
}
.h1{
    text-align: center;
    margin: 2rem;
}
.col-md-3{
    margin-top: 1rem;
    margin-bottom: 1rem;
}