.hover-btn {
    display: inline-block;
    border-radius: 4px;
    background-color: none;
    border: none;
    color: #FFFFFF;
    text-align: center;
    font-size: 28px;
    padding: 20px;
    width: 200px;
    transition: all 0.5s;
    cursor: pointer;
    margin: 4px;
}

.btn {
    padding: 3vh;
}

@media only screen and (max-width: 700px) {
    .rs {
        
        padding: 2vh;
    }
}

.hover-btn span {
    cursor: pointer;
    display: inline-block;
    position: center;
    transition: 0.5s;
}

.hover-btn span:after {
    content: '\00bb';
    position: absolute;
    opacity: 0;
    top: 0;
    right: -20px;
    transition: 0.5s;
}

.hover-btn:hover span {
    padding-right: 25px;
}

.hover-btn:hover span:after {
    opacity: 1;
    right: 0;
}