.box {
    width: 800px;
    margin: 0 auto;
    background-color: rgba(red, green, blue, alpha);
    background-image: url('./img/bgimg.png');
    background-size: 100%;
}

.useImgBox{
    width: 50px;
    border-radius: 50px;
    overflow: hidden;
}
.useImgBox img{
    width: 50px;
}