style.css

*{
    margin: 0;
    padding: 0;
    outline: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: #00000000;
}

html, body{
    height: 100%;
}

body{
    font-family: Arial, Helvetica, sans-serif;
    background-color: #ff6347;
}

#root{
    min-height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    align-items: center;
}


nav{
    background-color: #cecece;
    padding: 5px;
    max-width: 500px;
    width: 90%;
    margin-top: 10px;
    margin-bottom: 10px;
    border-width: 5px;
    border-style: solid;
    border-bottom-color: #808080;
    border-right-color: #808080;
    border-top-color: #FFF;
    border-left-color: #FFF;
}

nav h1{
    text-align: center;
    margin-bottom: 0.5em;
}

.row{
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.input-block{
    margin-right: 10px;
    margin-bottom: 10px;
}

nav .input-block label{
    display: block;
    text-transform: capitalize;
    text-align: center;
}

nav .input-block input{
    padding: 5px;
    width: 70px;
    text-align: center;
    font-size: 15px;
}

.button-container{
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    margin-bottom: 10px;
}

nav button{
    margin-top: 1;
    padding: 8px;
    border: 0;
    background-color: #ff6347;
    color: #FFF;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.5s;
}

nav button:hover{
    background-color: #d34931;
}

canvas{
    cursor: pointer;
    width: 90%;
    max-width: 500px;
}

footer{
	display: flex;
    justify-content: center;
}

footer a{
	display: flex;
	justify-content: center;
	align-items: center;
	color: #000;
	text-decoration: none;
}

footer img{
	height: 2em;
	margin-right: 10px;
}