:root {
    /* default font size in browsers is 16px = 1em, we make
       things easier for us and make 10px our base size.
       We have 10/16 = 0.625 = 1rem as it is set on root element.
       So 1rem is now 10px throughout our stylesheet.*/
    font-size: 0.625em;
  }
  
  * {
    box-sizing: border-box;
  }
  
  body {
    font-family: "Montserrat", sans-serif;
    font-size: 1.6rem;
    margin: auto;
    max-width: 60rem;
    color: #d8edea;
    background: radial-gradient(
      circle,
      rgba(175, 196, 174, 1) 0%,
      rgba(104, 204, 191, 1) 89%,
      rgba(94, 191, 178, 1) 100%
    );
  }
  
  header {
    text-align: center;
    margin-top: 3rem;
  }
  
  div {
    height: 2rem;
    width: 2rem;
  }
  
  /* some utility classes */
  .t-ucase {
    text-transform: uppercase;
  }
  
  .t-big {
    font-size: 1.5em;
  }
  
  .t-wide {
    letter-spacing: 1.5rem;
  }
  
  .t-close {
    letter-spacing: 1rem;
  }
  
  .fw-300 {
    font-weight: 300;
  }
  
  .fw-400 {
    font-weight: 400;
  }
  
  .score-display {
    font-size: 5rem;
    color: rgb(133, 121, 107, 0.5);
  }
  
  .game-area {
    display: flex;
    justify-content: center;
  }
  
  .game {
    height: 0;
    width: 300px;
  }
  
  .grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    width: 20rem;
    height: 40rem;
  }
  
  .previous-shape {
    width: 10rem;
    padding-left: 2rem;
    margin-top: -5rem;
  }
  
  .previous-grid {
    display: flex;
    flex-wrap: wrap;
    width: 8rem;
    height: 8rem;
  }
  
  .block {
    background-image: url(images/blue_block.png);
  }
  
  .block2 {
    background-image: url(mages/purple_block.png);
  }
  
  .block3 {
    background-image: url(images/wine_block.png);
  }
  
  .block4 {
    background-image: url(images/navy_block.png);
  }
  
  .block5 {
    background-image: url(images/pink_block.png);
  }
  
  .end {
    background-color: #d8edea;
  }
  
  .button {
    position: relative;
    width: 22rem;
    height: 2.2rem;
    text-align: center;
    color: #fff;
    letter-spacing: 1px;
    text-decoration: none;
    line-height: 23px;
    font-size: 10px;
    display: block;
    margin: 30px;
    text-shadow: -1px -1px 0 #a84155;
    background: #d25068;
    border: 1px solid #d25068;
    width: 12rem;
    background-image: linear-gradient(to bottom, #f66c7b, #d25068);
    border-radius: 5px;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5) inset,
      0 -1px 0 rgba(255, 255, 255, 0.1) inset, 0 4px 0 #ad4257,
      0 4px 2px rgba(0, 0, 0, 0.5);
  }
  
  .button:before {
    background: #f0f0f0;
    background-image: linear-gradient(#d0d0d0, #f0f0f0);
    border-radius: 5px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5) inset, 0 1px 0 #fff;
    position: absolute;
    content: "";
    left: -6px;
    right: -6px;
    top: -6px;
    bottom: -10px;
    z-index: -1;
  }
  
  .button:active {
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5) inset,
      0 -1px 0 rgba(255, 255, 255, 0.1) inset;
    top: 5px;
  }
  
  .button:active:before {
    top: -11px;
    bottom: -5px;
    content: "";
  }
  
  .button:hover {
    background: #f66c7b;
    background-image: linear-gradient(top, #d25068, #f66c7b);
  }
  
  .end {
    background-image: url(images/blue_block.png);
  }
  
  .display {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    text-align: center;
    margin-top: 3px;
    width: 17.5rem;
    height: 25rem;
    background: #f0f0f0;
    background-image: linear-gradient(#d0d0d0, #f0f0f0);
    border-radius: 5px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5) inset, 0 1px 0 #fff;
    color: #85796b;
  }
  
  .score,
  .lines-display {
    padding-top: 1rem;
    font-size: 1.2rem;
   
  }
  
  /*menu*/
  .container {
    max-width: 600px;
    padding: 0 3rem;
    margin: auto;
    overflow: hidden;
  }
  
  .btn:hover {
    opacity: 0.7;
  }
  
  /* START of MENU STYLING */
  .menu-wrap {
    position: fixed;
    top: 0;
    right:  0;
    z-index: 1;
  }
  
  .menu-wrap .toggler {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 2;
    width: 50px;
    height: 50px;
    opacity: 0;
    cursor: pointer;
  }
  
  .menu-wrap .hamburger {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 1;
    display: flex;
    width: 40px;
    height: 40px;
    padding: 1rem;
    background:#FD7C6F;
    align-items: center;
    justify-content: center;
  }
  
  /* Hamburger Line */
  .menu-wrap .hamburger > div {
    position: relative;
    display: flex;
    width: 150%;
    height: 2px;
    background: #fff;
    flex: none;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
  }
  
  /* Hamburger Lines - Top & Bottom */
  .menu-wrap .hamburger > div:before,
  .menu-wrap .hamburger > div:after {
    position: absolute;
    top: -7px;
    z-index: 1;
    width: 100%;
    height: 2px;
    background: inherit;
    content: "";
  }
  
  /* Moves Line Down */
  .menu-wrap .hamburger > div:after {
    top: 7px;
  }
  
  /* Toggler Animation */
  .menu-wrap .toggler:checked + .hamburger > div {
    transform: rotate(135deg);
  }
  
  /* Turns Lines Into X */
  .menu-wrap .toggler:checked + .hamburger > div:before,
  .menu-wrap .toggler:checked + .hamburger > div:after {
    top: 0;
    transform: rotate(90deg);
  }
  
  /* Rotate On Hover When Checked */
  .menu-wrap .toggler:checked:hover + .hamburger > div {
    transform: rotate(225deg);
  }
  
  .menu {
    display: flex;
    justify-content: center;
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(24, 39, 51, 0.85);
  }
  
  .menu-content {
    text-align: center;
    width: 600px;
    align-items: center;
    margin-top: 230px;
    justify-content: center;
    width: 200vw;
    height: 200vh;
    border-radius: 50%;
    transition: all 0.8s ease;
  }
  
  .rules {
    font-size: 12px;
    transition: color 0.4s ease;
  }
  
  .key {
    color: #f8de7e;
  }
  
  .close {
    border-radius: 5px;
    color: rgba(24, 39, 51, 0.85);
  }
  button.back{
    /*These lines override the previous styling of buttons*/
   
   background-size: cover;
   width:60px;
   height: 30px;

   /*These lines position the back button inside the header*/
   position:absolute;
   left : 20px;
   top: 40px;
}
body {
  font-size: 16px;
  font-family: "Helvetica", "Arial", sans-serif;
  text-align: center;
  background-color: #f8faff;
}

.bubbly-button {
  font-family: "Helvetica", "Arial", sans-serif;
  display: inline-block;
  font-size: 14px;
  /*These lines position the back button inside the header*/
  position:absolute;
  left : 1px;
  top: 1px;
  
  -webkit-appearance: none;
  appearance: none;
  background-color: #FD7C6F;
  color: #fff;
  
  border: none;
  cursor: pointer;
  transition: transform ease-in 0.1s, box-shadow ease-in 0.25s;
  box-shadow: 0 2px 25px rgba(255, 0, 130, 0.5);
  border-radius: 100%;
  width: 40px;
  height: 40px;
  text-align: center;
}
.bubbly-button:focus {
  outline: 0;
}
.bubbly-button:before, .bubbly-button:after {
  position: absolute;
  content: "";
  display: block;
  width: 140%;
  height: 100%;
  left: -20%;
  z-index: -1000;
  transition: all ease-in-out 0.5s;
  background-repeat: no-repeat;
}
.bubbly-button:before {
  display: none;
  top: -75%;
  background-image: radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, transparent 20%, #ff0081 20%, transparent 30%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, transparent 10%, #ff0081 15%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%);
  background-size: 10% 10%, 20% 20%, 15% 15%, 20% 20%, 18% 18%, 10% 10%, 15% 15%, 10% 10%, 18% 18%;
}
.bubbly-button:after {
  display: none;
  bottom: -75%;
  background-image: radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, transparent 10%, #ff0081 15%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%), radial-gradient(circle, #ff0081 20%, transparent 20%);
  background-size: 15% 15%, 20% 20%, 18% 18%, 20% 20%, 15% 15%, 10% 10%, 20% 20%;
}
.bubbly-button:active {
  transform: scale(0.9);
  background-color: #e60074;
  box-shadow: 0 2px 25px rgba(255, 0, 130, 0.2);
}
.bubbly-button.animate:before {
  display: block;
  animation: topBubbles ease-in-out 0.75s forwards;
}
.bubbly-button.animate:after {
  display: block;
  animation: bottomBubbles ease-in-out 0.75s forwards;
}

@keyframes topBubbles {
  0% {
    background-position: 5% 90%, 10% 90%, 10% 90%, 15% 90%, 25% 90%, 25% 90%, 40% 90%, 55% 90%, 70% 90%;
  }
  50% {
    background-position: 0% 80%, 0% 20%, 10% 40%, 20% 0%, 30% 30%, 22% 50%, 50% 50%, 65% 20%, 90% 30%;
  }
  100% {
    background-position: 0% 70%, 0% 10%, 10% 30%, 20% -10%, 30% 20%, 22% 40%, 50% 40%, 65% 10%, 90% 20%;
    background-size: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%;
  }
}
@keyframes bottomBubbles {
  0% {
    background-position: 10% -10%, 30% 10%, 55% -10%, 70% -10%, 85% -10%, 70% -10%, 70% 0%;
  }
  50% {
    background-position: 0% 80%, 20% 80%, 45% 60%, 60% 100%, 75% 70%, 95% 60%, 105% 0%;
  }
  100% {
    background-position: 0% 90%, 20% 90%, 45% 70%, 60% 110%, 75% 80%, 95% 70%, 110% 10%;
    background-size: 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%, 0% 0%;
  }
}