.cotizar-btn {
    position: relative;
    display: inline-block;
    color: white;
    padding: 8px 20px;
    font-weight: bold;
    z-index: 1;
}

.cotizar-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #e53935;
    z-index: -1;
    transition: background-color 0.3s;
}

.cotizar-btn:hover::before {
    background: #b71c1c;
}