Book

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
        x1="271"
        x2="271"
        y1="512"
        y2="0"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#00b59c" />
        <stop offset="1" stop-color="#9cffac" />
    </linearGradient>
    <linearGradient
        id="b"
        x1="226"
        x2="226"
        y1="421.647"
        y2="92.16"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#c3ffe8" />
        <stop offset=".997" stop-color="#f0fff4" />
    </linearGradient>
    <path
        fill="url(#a)"
        d="M436 0H121L91 243.525 121 512h315c8.401 0 15-6.601 15-15V15c0-8.401-6.599-15-15-15z"
    />
    <path
        fill="url(#b)"
        d="M61 45v422c0 24.899 20.099 45 45 45h15V0h-15C81.099 0 61 20.099 61 45zm225 256c57.9 0 105-47.1 105-105 0-51.601-37.5-94.801-86.7-103.2C285.099 97.599 271 115 271 136c0 8.399 6.599 15 15 15s15 6.599 15 15c0 8.399-6.599 15-15 15-24.901 0-45-20.101-45-45 0-14.401 4.2-27.9 11.1-39.3-41.4 14.099-71.1 53.399-71.1 99.3 0 57.9 47.1 105 105 105zm-33.6-105c7.2-3.6 16.5-.601 20.099 6.599 5.4 10.501 21.601 10.501 27.001 0 3.6-7.2 12.599-10.199 20.099-6.599s10.201 12.9 6.601 20.099C318.401 231.4 303.1 241 286 241s-32.401-9.6-40.201-24.901c-3.6-7.199-.899-16.499 6.601-20.099zm3.6 135c-8.291 0-15 6.709-15 15s6.709 15 15 15h60c8.291 0 15-6.709 15-15s-6.709-15-15-15zm90 60H226c-8.291 0-15 6.709-15 15s6.709 15 15 15h120c8.291 0 15-6.709 15-15s-6.709-15-15-15z"
    />
</svg>