body{
    margin: 0;
    background-color: silver;

}
.container{
    position: relative;
    width: 300px;
    height: 300px;
    background-color: teal;
}

.red{
    width: 100px;
    height: 100px;
    background-color: red;
   /* position: relative;
    left: 200px;
    display: inline-block;
    position: absolute;
    left: 200px;
    top: 200px;*/
    position: absolute;
    right: 0px;

}
.green{
    width: 100px;
    height: 100px;
    background-color: green;
   /* position: relative;
    right: 100px;
    display: inline-block;
    position: absolute;
    left: 100px;
    top: 100px;*/
    position: absolute;
    top: 0;
    left: 100px;
}
.black{
    width: 100px;
    height: 100px;
    background-color: blanchedalmond;
   /* position: relative;
    right: 100px;
    display: inline-block;*/
    position: fixed;
    top: 0;


}