body {
    height: 100vh;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    background: linear-gradient(to right,#f95ce2,#edca11);
}
  
.container {
    width: 95%;
    height: 100vh;
    margin: auto;
    display: flex;
    justify-content: center;
    align-items: center;
}
  
#calculator {
    border: 1px solid lightgray;
    background: whitesmoke;
    border-radius: 5px;
    width: 400px;
    margin: auto;
    padding: 0 25px;
    font-size: 1rem;
    font-weight: 100;
    box-shadow: 0px 2px 4px 0px rgba(0, 0, 0, 0.5);
}
  
#calculator input {
    box-sizing: border-box;
    width: 90%;
    padding: 8px;
    outline: none;
    border-radius: 5px;
    border: 1px solid lightgray;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}
  
#calculator button {
    width: 10%;
    padding: 8px;
    outline: none;
    cursor: pointer;
    border: 1px solid lightgray;
    border-radius: 5px;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    background: whitesmoke;
}
  
#calculator button:hover {
    background-color: rgba(0, 0, 0, 0.1);
}
  
#quality {
    width: 100%;
    padding: 8px;
    outline: none;
    border-radius: 5px;
    border: 1px solid lightgray;
}
  
/* The snackbar - position it at the bottom and in the middle of the screen */
#tip-amount {
    visibility: hidden;
    min-width: 250px; /* Set a default minimum width */
    margin: auto;
    background: limegreen;
    color: #fff; /* White text color */
    bottom: 30px; /* 30px from the bottom */
    text-align: center; /* Centered text */
    border-radius: 2px; /* Rounded borders */
    padding: 16px; /* Padding */
    position: fixed; /* Sit on top of the screen */
    z-index: 1; /* Add a z-index if needed */
}
  
/* Show the snackbar when clicking on a button (class added with JavaScript) */
#tip-amount.show {
    visibility: visible; /* Show the snackbar */
    /* Add animation: Take 0.5 seconds to fade in and out the snackbar.
    However, delay the fade out process for 2.5 seconds */
    -webkit-animation: fadein 0.5s, fadeout 0.5s 2.5s;
    animation: fadein 0.5s, fadeout 0.5s 2.5s;
}
  
/* Animations to fade the snackbar in and out */
@-webkit-keyframes fadein {
    from {bottom: 0; opacity: 0;}
    to {bottom: 30px; opacity: 1;}
}
  
@keyframes fadein {
    from {bottom: 0; opacity: 0;}
    to {bottom: 30px; opacity: 1;}
}
  
@-webkit-keyframes fadeout {
    from {bottom: 30px; opacity: 1;}
    to {bottom: 0; opacity: 0;}
}
  
@keyframes fadeout {
    from {bottom: 30px; opacity: 1;}
    to {bottom: 0; opacity: 0;}
}
  
@media (max-width: 480px) {
    .calculator input {
        width: 85%;
    }
    .calculator button {
        width: 15%;
    }
} 
  
@media (max-width: 320px) {
    .calculator input {
        width: 80%;
    }
    .calculator button {
      width: 20%;
    }
}