/* body {
    text-align: center;
}
 .btn-container {
   
    display: flex;
    justify-content: center;
 }
 .btn {
    height: 200px;
    width: 200px;
    border-radius: 20%;
    border: 10px solid black;
    margin: 2rem;
 }

 .b4{
      background-color: cornflowerblue;
 }
 .b1{
     background-color: rgb(134, 80, 161);
 }
 .b2 {
    background-color: rgb(98, 98, 48);
 }
 .b3 {
     background-color: rgb(28, 69, 28);
 }
 .flash {
    background-color: aliceblue;
 }
 .userflash {
    background-color: black;
 }
 .redflash {
    background-color: red;
 }

 @media screen {
   
 } */

 body {
    text-align: center;
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

/* Container stays centered and wraps if screen is narrow */
.btn-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;  /* allows buttons to wrap on small screens */
    padding: 1rem;
}

/* Default button style for mobile first */
.btn {
    width: 40vw;            /* each button is 40% of viewport width */
    height: 40vw;           /* keep it square */
    max-width: 150px;       /* don’t get too big on large screens */
    max-height: 150px;
    border-radius: 20%;
    border: 6px solid black;
    margin: 1rem;
}

.b4 {
    background-color: cornflowerblue;
}
.b1 {
    background-color: rgb(134, 80, 161);
}
.b2 {
    background-color: rgb(98, 98, 48);
}
.b3 {
    background-color: rgb(28, 69, 28);
}

/* Effects */
.flash {
    background-color: aliceblue;
}
.userflash {
    background-color: black;
}
.redflash {
    background-color: red;
}

/* Tablet: increase button size slightly */
@media (min-width: 600px) {
    .btn {
        width: 30vw;
        height: 30vw;
        max-width: 180px;
        max-height: 180px;
    }
}

/* Desktop/larger screens: slightly larger buttons */
@media (min-width: 900px) {
    .btn {
        width: 20vw;
        height: 20vw;
        max-width: 200px;
        max-height: 200px;
    }
}