body {
    font-family: Arial, sans-serif;
    text-align: center;
    background: linear-gradient(to bottom right, #ffb95fab, #207fb6c2);
}

.btn {
    height: 200px;
    width: 200px;
    border: 10px solid #000000;
    border-radius: 20%;
    margin: 20px;
}

.btn-container {
    display: flex;
    justify-content: center;
}

.red {
    background-color: #d95980;
}

.yellow {
    background-color: #f99b45;
}

.green {
    background-color: #63aac0;
}

.purple {
    background-color: #819ff9;
}

.flash {
    background-color: white;
}

.usreflash {
    background-color: green;
}

h1 {
    margin-top: 20px;
    font-size: 36px;
    color: #333;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    /* border: 3px double burlywood; */
}

h2 {
    margin-top: 10px;
    font-size: 24px;
    color: #666;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
    /* border: 3px double burlywood; */
}

@media screen and (max-width: 768px) {
    .btn {
        height: 150px;
        width: 150px;
        font-size: 16px;
        margin: 10px;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 18px;
    }
}

@media screen and (max-width: 480px) {
    .btn {
        height: 100px;
        width: 100px;
        font-size: 12px;
        margin: 5px;
    }

    h1 {
        font-size: 20px;
    }

    h2 {
        font-size: 16px;
    }
}