body {
    background: #0f0f0f;
    font-family: sans-serif;
    color: white;
    text-align: center;
    padding-top: 40px;
}

.title {
    font-size: 26px;
    margin-bottom: 30px;
}

.btn {
    width: 80%;
    padding: 18px;
    margin: 12px auto;
    border-radius: 14px;
    font-size: 20px;
    font-weight: bold;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.2);
    cursor: pointer;
    transition: 0.25s;
}

.btn:hover {
    transform: scale(1.05);
}

.green {
    background: rgba(0,255,120,0.25);
}

.red {
    background: rgba(255,0,0,0.25);
}

.blue {
    background: rgba(0,120,255,0.25);
}

.yellow {
    background: rgba(255,255,0,0.25);
}