Rectangle

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
        x1="256"
        x2="256"
        y1="436.384"
        y2="101.73"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset=".322" stop-color="#a163f5" />
        <stop offset=".466" stop-color="#b074ee" />
        <stop offset=".752" stop-color="#d8a1dd" />
        <stop offset=".898" stop-color="#efbad3" />
    </linearGradient>
    <linearGradient
        id="b"
        x1="46.964"
        x2="46.964"
        y1="436.384"
        y2="101.729"
        href="#a"
    />
    <path
        fill="url(#a)"
        d="M476 80.229H36a26.029 26.029 0 0 0-26 26v300a26.03 26.03 0 0 0 26 26h440a26.03 26.03 0 0 0 26-26v-300a26.029 26.029 0 0 0-26-26zm14 326a14.016 14.016 0 0 1-14 14H36a14.016 14.016 0 0 1-14-14v-300a14.015 14.015 0 0 1 14-14h440a14.015 14.015 0 0 1 14 14z"
    />
    <g fill="url(#b)">
        <path
            d="M46.964 223.63a6 6 0 0 0-6 6v92.492a6 6 0 0 0 12 0V229.63a6 6 0 0 0-6-6zM46.964 180.309a6 6 0 0 0-6 6v23.761a6 6 0 0 0 12 0v-23.761a6 6 0 0 0-6-6z"
        />
    </g>
</svg>