Border

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 64 64"
>
    <linearGradient
        id="a"
        x1="3.86"
        x2="52.11"
        y1="9.86"
        y2="64.49"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#15b3ff" />
        <stop offset="1" stop-color="#e200e9" />
    </linearGradient>
    <linearGradient
        id="b"
        x1="5.04"
        x2="53.29"
        y1="8.82"
        y2="63.45"
        href="#a"
    />
    <linearGradient
        id="c"
        x1="12.33"
        x2="60.58"
        y1="2.39"
        y2="57.01"
        href="#a"
    />
    <linearGradient
        id="d"
        x1="13.51"
        x2="61.76"
        y1="1.34"
        y2="55.97"
        href="#a"
    />
    <linearGradient
        id="e"
        x1="13.97"
        x2="62.22"
        y1=".93"
        y2="55.56"
        href="#a"
    />
    <linearGradient id="f" x1="8.68" x2="56.93" y1="5.6" y2="60.23" href="#a" />
    <path
        fill="url(#a)"
        d="M19 46a1 1 0 0 1-1-1V9a1 1 0 0 1 2 0v36a1 1 0 0 1-1 1z"
    />
    <path fill="url(#b)" d="M55 46H19a1 1 0 0 1 0-2h36a1 1 0 0 1 0 2z" />
    <path fill="url(#c)" d="M45 20H9a1 1 0 0 1 0-2h36a1 1 0 0 1 0 2z" />
    <path
        fill="url(#d)"
        d="M45 56a1 1 0 0 1-1-1V19a1 1 0 0 1 2 0v36a1 1 0 0 1-1 1z"
    />
    <path
        fill="url(#e)"
        d="M19 46a1 1 0 0 1-.71-.29 1 1 0 0 1 0-1.42l36-36a1 1 0 0 1 1.42 1.42l-36 36A1 1 0 0 1 19 46z"
    />
    <path
        fill="url(#f)"
        d="M58 61H6a3 3 0 0 1-3-3V6a3 3 0 0 1 3-3h52a3 3 0 0 1 3 3v52a3 3 0 0 1-3 3zM6 5a1 1 0 0 0-1 1v52a1 1 0 0 0 1 1h52a1 1 0 0 0 1-1V6a1 1 0 0 0-1-1z"
    />
</svg>