svg {
    margin: 10px;
    width: 640px;
    height: 640px;
    border: 5px solid black;
}

rect {
    fill: none;
}

circle {
    fill: none;
    stroke: black;
    stroke-width: 1px;
}

.axis {
    stroke: black;
    stroke-width: 1px;
}

.bluevector {
    fill: true;
    stroke: var(--main-color);
    stroke-width: 5px;
}

.redvector {
    fill: true;
    stroke: var(--accent-color);
    stroke-width: 5px;
}

.grayvector {
    stroke: var(--sub-color);
    stroke-width: 2px;
}