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html, body {
margin: 0;
padding: 0;
}
canvas {
display: block;
}
input {
appearance: none;
width: 100%;
height: 15px;
border-radius: 5px;
background: #d3d3d3;
outline: none;
opacity: 0.7;
transition: .2s;
transition: opacity .2s;
}