findNumber.css

#title {
    display: flex;
    justify-content: center;
}

#directions {
    display: flex;
    justify-content: center;
}

#question {
    text-align: center;
}

#show-shape{
    display: flex;
    justify-content: center;
}

.shape {
    float: left;
    margin: 1%;
}

.square {
    background-color: red;
    border-radius: 10%;
}

.square-small {
    width: 75px;
    height: 75px;
}

.square-big {
    width: 150px;
    height: 150px; 
    display: flex;
    justify-content: center;
}

.triangle {
    width: 0;
    height: 0;
    border-left: 50px solid transparent;
    border-right: 50px solid transparent;
    
  }

.triangle-small {
    border-bottom: 100px solid red;
}

.triangle-big {
    border-left: 75px solid transparent;
    border-right: 75px solid transparent;
    border-bottom: 150px solid red;
    display: flex;
    justify-content: center;
}

.circle {
    background: red;
    border-radius: 50%
}

.circle-small {
    width: 100px;
    height: 100px;
}

.circle-big {
    width: 150px;
    height: 150px;
    display: flex;
    justify-content: center;
}

#number-container {
    border: solid black 2px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.number {
    color: white;
    font-size: 5em;
    font-weight: 600;
}