.button {
    border-radius: 4px;
    background-color: var(--secondary-color);
    color: var(--last-color);
    font-family: inherit;
    font-size: 20px;
    border: 0;
    padding: 10px 20px 10px 20px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
    width: 150px;
    display: block;
}


.button span {
    cursor: pointer;
    display: inline-block;
    position: relative;
    transition: 0.3s;
}
  
.button span:after {
    content: '\00bb';
    position: absolute;
    opacity: 0;
    top: 0;
    right: -20px;
    transition: 0.3s;
}
  
.button:hover span {
    padding-right: 25px;
}
  
.button:hover span:after {
    opacity: 1;
    right: 0;
}