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HTML

              
                <button class="btn-share">
  <span class="btn-overlay"><svg t="1580465783605" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="9773" width="20" height="20"><path d="M767.99994 585.142857q75.995429 0 129.462857 53.394286t53.394286 129.462857-53.394286 129.462857-129.462857 53.394286-129.462857-53.394286-53.394286-129.462857q0-6.875429 1.170286-19.456l-205.677714-102.838857q-52.589714 49.152-124.562286 49.152-75.995429 0-129.462857-53.394286t-53.394286-129.462857 53.394286-129.462857 129.462857-53.394286q71.972571 0 124.562286 49.152l205.677714-102.838857q-1.170286-12.580571-1.170286-19.456 0-75.995429 53.394286-129.462857t129.462857-53.394286 129.462857 53.394286 53.394286 129.462857-53.394286 129.462857-129.462857 53.394286q-71.972571 0-124.562286-49.152l-205.677714 102.838857q1.170286 12.580571 1.170286 19.456t-1.170286 19.456l205.677714 102.838857q52.589714-49.152 124.562286-49.152z" p-id="9774" fill="currentColor"></path></svg>&nbsp;Share</span>
  <a href="#"><svg t="1580195676506" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="2099" width="28" height="28"><path d="M962.267429 233.179429q-38.253714 56.027429-92.598857 95.451429 0.585143 7.972571 0.585143 23.990857 0 74.313143-21.723429 148.260571t-65.974857 141.970286-105.398857 120.32-147.456 83.456-184.539429 31.158857q-154.843429 0-283.428571-82.870857 19.968 2.267429 44.544 2.267429 128.585143 0 229.156571-78.848-59.977143-1.170286-107.446857-36.864t-65.170286-91.136q18.870857 2.852571 34.889143 2.852571 24.576 0 48.566857-6.290286-64-13.165714-105.984-63.707429t-41.984-117.394286l0-2.267429q38.838857 21.723429 83.456 23.405714-37.741714-25.161143-59.977143-65.682286t-22.308571-87.990857q0-50.322286 25.161143-93.110857 69.12 85.138286 168.301714 136.265143t212.260571 56.832q-4.534857-21.723429-4.534857-42.276571 0-76.580571 53.979429-130.56t130.56-53.979429q80.018286 0 134.875429 58.294857 62.317714-11.995429 117.174857-44.544-21.138286 65.682286-81.115429 101.741714 53.174857-5.705143 106.276571-28.598857z" p-id="2100" fill="currentColor"></path></svg></a>
  <a href="#"><svg t="1580195734305" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="2429" width="28" height="28"><path d="M123.52064 667.99143l344.526782 229.708899 0-205.136409-190.802457-127.396658zM88.051421 585.717469l110.283674-73.717469-110.283674-73.717469 0 147.434938zM556.025711 897.627196l344.526782-229.708899-153.724325-102.824168-190.802457 127.396658 0 205.136409zM512 615.994287l155.406371-103.994287-155.406371-103.994287-155.406371 103.994287zM277.171833 458.832738l190.802457-127.396658 0-205.136409-344.526782 229.708899zM825.664905 512l110.283674 73.717469 0-147.434938zM746.828167 458.832738l153.724325-102.824168-344.526782-229.708899 0 205.136409zM1023.926868 356.00857l0 311.98286q0 23.402371-19.453221 36.566205l-467.901157 311.98286q-11.993715 7.459506-24.57249 7.459506t-24.57249-7.459506l-467.901157-311.98286q-19.453221-13.163834-19.453221-36.566205l0-311.98286q0-23.402371 19.453221-36.566205l467.901157-311.98286q11.993715-7.459506 24.57249-7.459506t24.57249 7.459506l467.901157 311.98286q19.453221 13.163834 19.453221 36.566205z" p-id="2430" fill="currentColor"></path></svg></a>
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  <a href="#"><svg t="1580195779874" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="3041" width="28" height="28"><path d="M208.603429 808.009143l132.022857 0 0-396.580571-132.022857 0 0 396.580571zM349.110857 289.133714q-0.585143-29.696-20.553143-49.152t-53.174857-19.456-53.979429 19.456-20.845714 49.152q0 29.110857 20.260571 48.859429t52.882286 19.748571l0.585143 0q33.718857 0 54.272-19.748571t20.553143-48.859429zM683.446857 808.009143l132.022857 0 0-227.401143q0-87.990857-41.691429-133.12t-110.299429-45.129143q-77.677714 0-119.442286 66.852571l1.170286 0 0-57.709714-132.022857 0q1.682286 37.741714 0 396.580571l132.022857 0 0-221.696q0-21.723429 4.022857-32.036571 8.557714-19.968 25.746286-34.011429t42.276571-13.970286q66.267429 0 66.267429 89.746286l0 211.968zM950.857143 237.714286l0 548.571429q0 68.022857-48.274286 116.297143t-116.297143 48.274286l-548.571429 0q-68.022857 0-116.297143-48.274286t-48.274286-116.297143l0-548.571429q0-68.022857 48.274286-116.297143t116.297143-48.274286l548.571429 0q68.022857 0 116.297143 48.274286t48.274286 116.297143z" p-id="3042" fill="currentColor"></path></svg></a>
</button>

              
            
!

CSS

              
                // palette: https://coolors.co/1c1d2a-8d99ae-edf2f4-ef233c-d90429
@import url(https://fonts.googleapis.com/css?family=Lato);

body {
  display: flex;
  height: 100vh;
  justify-content: center;
  align-items: center;
  background: #ECEFFC;
}

.btn-share {
  --btn-inner-color: #E6E9ED;
  --btn-overlay-color: #1F1E1E;
  --icon-color: #1c1d2a;
  position: relative;
  display: flex;
  font-size: 100%;
  font-family: Lato, sans-serif;
  color: white;
  letter-spacing: 2px;
  background: var(--btn-inner-color);
  border: none;
  border-radius: 80px;
  outline: none;
  cursor: pointer;
  overflow: hidden;
  transform: rotate(0);
  transition: 0.2s ease-in-out;

  .btn-overlay {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    background: var(--btn-overlay-color);
    border-radius: inherit;
    transition: 0.6s linear;
  }

  a {
    padding: 14px;
    color: var(--icon-color);
    opacity: 0;
    transform: translateX(-100%);
    transition: 0.3s;

    @for $i from 1 through 4 {
      &:nth-child(#{$i}) {
        transition-delay: 1s - 0.2s * ($i - 1);
      }
    }
  }

  &:hover {
    transform: scale(1.1);

    .btn-overlay {
      transform: translateX(-100%);
      transition-delay: 0.25s;
    }

    a {
      opacity: 1;
      transform: translateX(0);
    }
  }
}

              
            
!

JS

              
                
              
            
!
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