style.css

html {
    box-sizing: border-box;
    font-size: 62.5%;
}

*, *:before, *:after {
    box-sizing: inherit;
}

body {
    font-size: 1.6rem;
    font-family: 'Montserrat', Arial, sans-serif;
    color: #1A2A32;
}

img {
    max-width: 100%;
}

h1 {
    font-size: 2rem;
}
h2 {
    font-size: 1.5rem;
}
/*
$$\      $$\           $$\           
$$$\    $$$ |          \__|          
$$$$\  $$$$ | $$$$$$\  $$\ $$$$$$$\  
$$\$$\$$ $$ | \____$$\ $$ |$$  __$$\ 
$$ \$$$  $$ | $$$$$$$ |$$ |$$ |  $$ |
$$ |\$  /$$ |$$  __$$ |$$ |$$ |  $$ |
$$ | \_/ $$ |\$$$$$$$ |$$ |$$ |  $$ |
\__|     \__| \_______|\__|\__|  \__|*/

aside {
    width: 20vw;
    max-width: 300px;
    height: 100vh;
    background: #EEF3F6;
    position: fixed;
    top: 0;
    left: 0;
    padding: 32px 16px 0;
    transition: all ease-in-out .3s;
}

aside.hidden {
    left: -300px;
}

aside > svg {
    width: 20px;
    position: absolute;
    top: 16px;
    right: 16px;
    cursor: pointer;
}

aside ul {
    list-style: none;
    display: flex;
    flex-flow:column nowrap;
    justify-content: center;
    align-items: center;
    padding: 0;
}

aside ul li {
    margin: 8px 0;
}

.btn {
    border: none;
    background: hsl(202, 32%, 50%);
    padding: 6px 16px;
    color: #fff;
    border-radius: 4px;
    cursor: pointer;
    transition: all ease-in-out .3s;
}

.btn:hover {
    background: hsl(202, 32%, 30%);
}

.input {
    display: flex;
    flex-flow:row wrap;
    justify-content: space-around;
    align-items: center;
    width: 100%;
}

.input input {
    width: 30%;
}

.download {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    text-decoration: none;
    width: fit-content;
}

main {
    width: 100vw;
    height: 100vh;
    display: grid;
    place-items: center;
}

.burger {
    position: absolute;
    top: 32px;
    left: 32px;
    width: 20px;
}

.burger.hidden {
    display: none;
}

canvas {
    border: 1px solid #1A2A32;
    max-width: 98vw;
    max-height: 98vh;
}
/*                                      
$$$$$$$$\                   $$\                         
$$  _____|                  $$ |                        
$$ |    $$$$$$\   $$$$$$\ $$$$$$\    $$$$$$\   $$$$$$\  
$$$$$\ $$  __$$\ $$  __$$\\_$$  _|  $$  __$$\ $$  __$$\ 
$$  __|$$ /  $$ |$$ /  $$ | $$ |    $$$$$$$$ |$$ |  \__|
$$ |   $$ |  $$ |$$ |  $$ | $$ |$$\ $$   ____|$$ |      
$$ |   \$$$$$$  |\$$$$$$  | \$$$$  |\$$$$$$$\ $$ |      
\__|    \______/  \______/   \____/  \_______|\__|     */