.product_variants {margin-right:10px;}
.product_variants img {-webkit-transition: 0.2s; /* Safari */
    transition: 0.2s;}
.product_variants img:hover {border: 1px solid #999;}

.button_attr_color {
  border: solid;
  color: white;
  padding: 17px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 12px;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 50%;
}

.button_op {
  background-color: #4CAF50; /* Green */
  border: none;
  color: white;
  height: AUTO;
  width: 60px;
  padding: 0px 0px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 14px;
  margin: 4px 2px;
  transition-duration: 0.4s;
  cursor: pointer;
}


.button_op1 {
  background-color: white; 
  color: black; 
  border: 2px solid #f44336;
}

.button_op1:hover {
  background-color: #f44336;
  color: white;
}