style.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat';
}

html, body {
    height: 100vh;
    width: 100%;
}

body {
    background: #323232;    
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

h1 {
    color: #F0F0F0;
    text-align: center;
    font-weight: 500;
    letter-spacing: 2px;
    font-size: 1.5rem;
    text-transform: uppercase;
    background: #F0F0F020;
    padding: 10px;
}

#canvas {
    margin-top: 20px;
    border: 3px solid #00000088;
    border-radius: 10px;
    background: #F0F0F0;
}

.controls {
    width: fit-content;
    height: fit-content;
    display: flex;
    margin-top: 20px;
    flex-direction: row;
    align-items: flex-start;
    justify-content: center;
}

.control-item {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin: 0px 20px;
}

.control-item label {
    color: #F0F0F0;
    opacity: .8;
    margin-bottom: 5px;
    font-size: 1rem;
    text-transform: capitalize;
}

.control-item input {
    font-size: .8rem;
    text-align: center;
    padding: 2px;
    color: #323232;
    font-weight: 500;
}