.container{
    background-image: url("https://www2.d125.org/applied_arts/teched/courses/WEB/portfolios/2014_FallP8/Rami_Portfolio_Period8/unit4_css/project2/cssProject2/grid.png");
    width: 960px;
    height: 780px;
    margin: auto;
    padding-top: 20px;
}

.longbox{
    width: 940px;
    height: 100px;
}

.box{
    background-color: grey;
    float: left;
    opacity: 0.8;
}

.smallbox{
    margin-top:20px;
    margin-bottom: 30px;
    width: 220px;
    height: 220px;

}

.ml-10{
    margin-left: 10px;
}

.ml-20{
    margin-left: 20px;
}