body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif,
    "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
}

#toastArea {
  position: absolute;
  top: 1%;
  right: 1%;
}

.toast {
  background-color: rgba(255, 255, 255, 0.85);
  background-clip: padding-box;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.1);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-radius: 0.25rem;
  border-left: 3px solid #3f6ad8;
  width: 20rem;
  margin-bottom: 1rem;
  display: none;
  animation: glow-blue 1.5s infinite ease-in-out !important;
}

.toast.success {
  border-left: 3px solid #31a66a;
  animation: glow-green 1.5s infinite ease-in-out !important;
}

.toast.danger {
  border-left: 3px solid #b81f44;
  animation: glow-red 1.5s infinite ease-in-out !important;
}

@-webkit-keyframes glow-red {
  0% {
    -webkit-box-shadow: 0 0 50px 50px rgba(255, 50, 50, 0.9);
  }

  50% {
    -webkit-box-shadow: 0 0 50px 0px rgba(255, 50, 50, 0.2);
  }

  100% {
    -webkit-box-shadow: 0 0 50px 50px rgba(255, 50, 50, 0.9);
  }
}

@keyframes glow-red {
  0% {
    box-shadow: 0 0 50px rgba(255, 50, 50, 0.9);
  }

  50% {
    box-shadow: 0 0 50px rgba(255, 50, 50, 0.2);
  }

  100% {
    box-shadow: 0 0 50px rgba(255, 50, 50, 0.9);
  }
}

@-webkit-keyframes glow-green {
  0% {
    -webkit-box-shadow: 0 0 50px 50px rgba(50, 230, 50, 0.9);
  }

  50% {
    -webkit-box-shadow: 0 0 50px 0px rgba(50, 230, 50, 0.2);
  }

  100% {
    -webkit-box-shadow: 0 0 50px 50px rgba(50, 230, 50, 0.9);
  }
}

@keyframes glow-green {
  0% {
    box-shadow: 0 0 50px rgba(50, 230, 50, 0.9);
  }

  50% {
    box-shadow: 0 0 50px rgba(50, 230, 50, 0.2);
  }

  100% {
    box-shadow: 0 0 50px rgba(50, 230, 50, 0.9);
  }
}

@-webkit-keyframes glow-blue {
  0% {
    -webkit-box-shadow: 0 0 50px 50px rgba(50, 50, 255, 0.9);
  }

  50% {
    -webkit-box-shadow: 0 0 50px 0px rgba(50, 50, 255, 0.2);
  }

  100% {
    -webkit-box-shadow: 0 0 50px 50px rgba(50, 50, 255, 0.9);
  }
}

@keyframes glow-blue {
  0% {
    box-shadow: 0 0 50px rgba(50, 50, 255, 0.9);
  }

  50% {
    box-shadow: 0 0 50px rgba(50, 50, 255, 0.2);
  }

  100% {
    box-shadow: 0 0 50px rgba(50, 50, 255, 0.9);
  }
}

.toast.show {
  display: block;
  animation: fadein 0.5s;
}

.toast .toast-head {
  display: flex;
  -ms-flex-align: center;
  align-items: center;
  padding: 0.25rem 0.75rem;
  color: #6c757d;
  background-color: rgba(255, 255, 255, 0.85);
  background-clip: padding-box;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
}

.toast .toast-head button {
  position: absolute;
  right: 1%;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  outline: none;
}

.toast .toast-body {
  padding: 0.75rem;
}

@-webkit-keyframes fadein {
  from {
    margin-bottom: 0;
    opacity: 0;
  }

  to {
    margin-bottom: 1rem;
    opacity: 1;
  }
}

@keyframes fadein {
  from {
    margin-bottom: 0;
    opacity: 0;
  }

  to {
    margin-bottom: 1rem;
    opacity: 1;
  }
}

#dis {
  border: 1px solid #444;
}

.butt {
  background: lightskyblue;
  color: #fff;
  padding: 0.8rem 1.7rem;
  overflow: hidden;
  text-decoration: none;
  text-transform: uppercase;
  border-radius: 3px;
  transition: 0.3s;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  border: none;
  font-size: 15px;
  margin-right: 1rem;
  text-align: center;
  cursor: pointer;
}

.butt:hover {
  background: #3dbeff;
  text-decoration: none;
  color: #fff;
}

.words {
  background: #fed86f;
  color: #963;
  padding: 1rem;
  font-family: sans-serif;
  user-select: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  width: 50%;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.words div {
  padding: 1rem 2rem;
  display: block;
  width: 100%;
  border: 1px solid #963;
  box-sizing: border-box;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all 0.25s;
}

.words div:hover {
  box-shadow: 0 2px 6px rgb(219, 133, 47);
  color: rgb(219, 133, 47);
}

.words div.disabled {
  background: #aaaaaa88;
  pointer-events: none;
}

.fib {
  background: #eee;
  padding: 1rem;
  width: 50%;
  font-family: sans-serif;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
  position: relative;
}
.fib:before {
  position: absolute;
  top: -2rem;
  left: 0.2rem;
  content: "Final Solution:";
  font-weight: bold;
}

.blank {
  min-width: 3rem;
  text-align: center;
  display: inline-block;
  border-bottom: 1px solid #444;
}

.sentence {
  padding: 1rem 2rem;
  padding-right: 6rem;
  border: 1px solid #888;
  margin-bottom: 0.5rem;
  position: relative;
}
.sentence:after {
  content: "\25bc";
  position: absolute;
  bottom: -1rem;
  left: 50%;
  transform: translateX(-50%);
}
.sentence:nth-last-child(1):after {
  content: "";
}
.sentence.wrong {
  border: 2px solid red;
}

.sentence .butArea {
  position: absolute;
  right: 1%;
  top: 50%;
  transform: translateY(-50%);
}

.sentence button {
  background: #444;
  color: #fff;
  border: none;
  outline: none;
  padding: 0.5rem 0.6rem;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid #444;
  font-weight: bold;
  font-size: 0.8rem;
}

.sentence button:hover {
  background: #fed86f;
  color: #963;
}

.wrapper {
  display: flex;
  margin-top: 1.5rem;
}