.productpage-button.v-btn:before{
    background-color: transparent !important;
}
.productpage-button:active{
  background-color: transparent !important;
}
.productpage-button.theme--light.v-btn.v-btn--disabled:not(.v-btn--flat):not(.v-btn--text):not(.v-btn--outlined)
{
 background-color: transparent !important; 
}
.productpage-button.theme--light.v-btn:hover:before {
    opacity:0 !important;
}