html {
    height: 100%;
    width: 100%;
    align-items: center;
}

#content {
    display: flex;
    justify-content: center;
    flex-direction: column;
}

#controls {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    flex-direction: column;
}

.box {
    height: 20px;
    width: 20px;
    margin-bottom: 15px;
    margin-left: 5px;
    border: 1px solid black;
}

.red {
    background-color: red;
}

.green {
    background-color: green;
}

.blue {
    background-color: blue;
}

#legend-box {
    display: flex;
    flex-direction: row;
}

#control-buttons-box {
    display: flex;
    flex-direction: row;
}

.arrow-button{
    height: 50px;
    width: 80px;
    margin-bottom: 15px;
    margin-left: 5px;
    border: 1px solid black;
}

input[type='number']{
    width: 50px;
}