.square, .circle {
    width: 200px;
    height: 200px;
    display: ;
}
.rectangle {
    width: 144px;
    height: 100px;
    display: inline-grid;
}

.rectangle2 {
    width: 200px;
    height: 100px;
    display: inline-grid;
}

.rectangle3 {
    width: 120px;
    height: 84px;
    display: inline-grid;
}
.circle {
    border-radius: 50%;
}
#blockred {
    background-color: red;
}
#blockyellow {
    background-color: yellow;
}
#blockbrown {
    background-color: sandybrown;
}

#blockgreen {
    background-color: lemonchiffon;
}

#container {
  position: relative;
  border: 100px solid rosybrown;
  height: 555px;
  top: 10px;
  left: 10px;
  margin-right: 20px;
}

#container2 {
  position: fixed;
  border: 148px solid pink;
  height: 500px;
  top: 0px;
  left: 0px;
  
}


}
}

#myelem {
    position : fixed;
    bottom : 30px;
    right : 30px;
}

#box {
  position: absolute;
  top: 50px;
  left: 20px;
}