Subtle animation for custom themes- Styling for CTA button - https://www.shopify.com/partners/blog/text-animation-css

animated-cta-button.scss

/*================ Animated CTA ================*/

.section-cta {
  text-align: center;
}

.btn-animated {
  width: 200px;
  height: 50px;
  display: inline-block;
  position: relative;
  background-color: #5C6AC4;
  border-radius: 50px;
  overflow: hidden;
  cursor: pointer;
  text-align: center;
  z-index: 1;
    	
  &:before {
    content: "";
    position: absolute;
    width: 140%;
    height: 100%;
    background-color: #FFFFFF;
    transform: rotate(10deg);
    top: -150%;
    left: 20%;
    transition: .3s ease-in-out;
       
  }
	
  &:after {
    content: "";
    position: absolute;
    width: 140%;
    height: 120%;
    background-color: #FFFFFF;
    transform: rotate(10deg);
    top: 150%;
    left: -20%;
    transition: .3s ease-in-out;
        
  }
	
  &:hover {
    background-color: #FFFFFF;
    transition: 0s linear;
    transition-delay: .3s;
  }
	
    &:hover:before {
      top: -20px;
      left: -20%;
      transition: .3s ease-in-out;
       
   }
	
     &:hover:after {
       top: 10px;
       left: -23%;
       transition: .3s ease-in-out;
        
   }
	
     &:hover > .btn-content {
        color: #000000;
	transition: .3s ease-in-out;
   }
	
     .btn-content {
       width: 100%;
       height: 100%;
       text-align: center;
       line-height: 50px;
       color: #FFFFFF;
       font-weight: 400;
       position: relative;
       z-index: 999;
       transition: .3s ease-in-out;
  }
}

a:hover {
  opacity: 1;
}