#container { 
    display: flex;
    gap: 20px;
    padding: 40px;
}

.square,
 .circle {
width: 100px;
height: 100px;

}

.circle {
border-radius: 50%;
}

#squarered {
background-color: red;
}
#sqaureyellow {
background-color: yellow;
}
#circleRed { 
    background-color: red;
}
#circleYellow { 
    background-color: yellow; 
}