Add Button

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 48 48"
>
    <linearGradient
        id="b"
        x1="0"
        x2="1"
        y1="0"
        y2="0"
        gradientTransform="rotate(-41.32 896.597 -598.945) scale(34.968)"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#000034" />
        <stop offset="1" stop-color="#2f3fbd" />
    </linearGradient>
    <linearGradient id="a">
        <stop offset="0" stop-color="#cc7800" />
        <stop offset="1" stop-color="#ffbf63" />
    </linearGradient>
    <linearGradient
        id="c"
        x1="0"
        x2="1"
        y1="0"
        y2="0"
        gradientTransform="matrix(9.524 -18.182 18.182 9.524 646.103 451.526)"
        gradientUnits="userSpaceOnUse"
        href="#a"
    />
    <linearGradient
        id="d"
        x1="0"
        x2="1"
        y1="0"
        y2="0"
        gradientTransform="scale(9.422) rotate(-62.65 71.36 -31.945)"
        gradientUnits="userSpaceOnUse"
        href="#a"
    />
    <g fill-rule="evenodd" stroke-linejoin="round" stroke-miterlimit="2">
        <path
            fill="url(#b)"
            d="M650.5 415a3.503 3.503 0 0 0-3.5-3.5h-28a3.503 3.503 0 0 0-3.5 3.5v28a3.503 3.503 0 0 0 3.5 3.5h28a3.503 3.503 0 0 0 3.5-3.5z"
            transform="translate(-612 -408)"
        />
        <path
            fill="url(#c)"
            d="M653.5 417v32.5H621a1.5 1.5 0 0 0 0 3h34a1.5 1.5 0 0 0 1.5-1.5v-34a1.5 1.5 0 0 0-3 0z"
            transform="translate(-612 -408)"
        />
        <path
            fill="url(#d)"
            d="M631.5 427.5H627a1.5 1.5 0 0 0 0 3h4.5v4.5a1.5 1.5 0 0 0 3 0v-4.5h4.5a1.5 1.5 0 0 0 0-3h-4.5V423a1.5 1.5 0 0 0-3 0z"
            transform="translate(-612 -408)"
        />
    </g>
</svg>