.call-btn {
    background-color: #c70000;
    padding: 5px;
    color: #fff;
    font-weight: 500;
    font-size: 17px;
    letter-spacing: 2px;
    text-decoration: none;
}

.call-btn:hover {
    background-color: #ed2d2d;
    color: #fff;
}