Blobby Button

<button class="blobby-button">CSSLab <span class="inner">
  <span class="blobs">
    <span class="blob"></span>
 <span class="blob"></span>
 <span class="blob"></span>

    <span
    class="blob"></span>
        </span>
        </span>
        <svg xmlns="http://www.w3.org/2000/svg" version="1.1">
            <defs>
                <filter id="goo">
                    <feGaussianBlur in="SourceGraphic" result="blur" stdDeviation="10"></feGaussianBlur>
                    <feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 21 -7"
                    result="goo"></feColorMatrix>
                    <feBlend in2="goo" in="SourceGraphic" result="mix"></feBlend>
                </filter>
            </defs>
        </svg>
</button>