.popup-content h3 {
  background-color: #000;
  color:  #ff3200;
  font-family: "Arial", sans-serif;
  padding: 3px;
  Text-align: center;
  font-weight: bold;
  font-size: 1.2em;
  border-bottom: 2px solid #333;
}
.popup {
  right: -320px;
  position: fixed;
  top: 25%;
  transition: right .5s ease;
  z-index: 9999;
}
.popup-content {
    background-color: #000;
    box-shadow:  5px 2px 15px black;
    box-sizing: border-box;    
    color: white;
    float: right;
    height: 400px;
    padding: 1em;
    width: 320px;
    border: 1px solid #999;
}

.close {
  right: 5%;
}

.button {
  background-color:  #ff3200;  
  border-bottom-left-radius: 10px;
  border-top-left-radius: 10px; 
  float: left;
  height: 50px;
  padding-top: 1.5em;
  width: 25px;  
}
.button::after{
    content:"◀";
    color: #fff;
    cursor: pointer;
    font-size: 1.2em;
    padding: 5px;
  }
.button-closed::after{
    content:"▶";
    color: #fff;
    cursor: pointer;
    font-size: 1.2em;
}