.expanding-btn {
    display: flex;
}

.expanding-btn .btn {
    padding: 10px 17px 10px 17px;
    border-color: transparent;
    border-radius: 7px;
}

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

.expanding-btn .btn span.icon {
    position: absolute;
    opacity: 0;
    top: 0;
    transition: 0.5s;
}

.expanding-btn .btn:hover span.icon {
    opacity: 1;
}

.expanding-btn .btn svg {
    width: 10px;
    height: 10px;
}