.col-b{
    border: 3px solid  rgba(191, 123, 255, 0.451);;
}
.img-1{
    position: relative;
    width: 100%;
    height: 50%;
}
.but{
    position: relative;
    left: 30%;
    bottom: 2%;
    width: 40%;
    height: 30px;
    font-size: 20px;
    color: blueviolet;
    background-color:  rgba(191, 123, 255, 0.265);;
}