@charset "utf-8";

body {
  font-family: 'Noto Sans JP', sans-serif;
  letter-spacing: 0.1rem;
}

.flex {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ボタン */
button {
  text-align: center;
  background: transparent;
  margin: 0 auto;
  display: block;
}

button a {
  display: inline-block;
  color: #fff;
  padding: 18px 45px;
  border-radius: 50px;
  text-decoration: none;
  outline: none;
  background: linear-gradient(90deg, rgb(153, 204, 51) 0%, rgb(102, 204, 255) 100%);
  background-position: 1% 50%;
  background-size: 200% auto;
  box-sizing: border-box;
  font-size: 20px;
}

button a:hover {
  color: #fff;
  background-position: 99% 50%;
}

button a br {
  display: none;
}

.backnumber {
  display: flex;
  justify-content: center;
  margin: 0 auto;
  padding-bottom: 50px;
  width: 80%;
}

.backnumber a {
  display: block;
  width: fit-content;
  border-radius: 5px;
  margin: 0 5px 10px;
  padding: 15px 30px;
  letter-spacing: 1px;
  background-image: linear-gradient(125deg, rgb(153, 204, 51) 0%, rgb(102, 204, 255) 60%);
  filter: drop-shadow(1px 1px 1px rgb(230, 228, 228));
  border: 2px solid white;
  color: white;
  text-align: center;
  box-sizing: border-box;
}

.backnumber a span {
  display: block;
  color: white;
  font-size: 15px;
  padding-bottom: 5px;
}



@media only screen and (max-width: 510px) {
  button {
    width: 80%;
  }

  .entry button {
    width: 100%;
  }

  button a {
    padding: 18px 0;
    width: 100%;
    font-size: 18px;
  }

  button a br {
    display: block;
  }

  .backnumber {
    flex-direction: column;
    margin: 0 auto;
  }

  .backnumber a {
    width: 100%;
    padding: 15px 10px;
  }

}

.reflection-img {
  width: 510px;
  position: relative;
  overflow: hidden;
}

.reflection {
  height: 100%;
  width: 30px;
  position: absolute;
  top: -180px;
  left: 0;
  background-color: #fff;
  opacity: 0;
  transform: rotate(45deg);
  animation: reflection 2s ease-in-out infinite;
  -webkit-transform: rotate(45deg);
  -webkit-animation: reflection 2s ease-in-out infinite;
  -moz-transform: rotate(45deg);
  -moz-animation: reflection 2s ease-in-out infinite;
  -ms-transform: rotate(45deg);
  -ms-animation: reflection 2s ease-in-out infinite;
  -o-transform: rotate(45deg);
  -o-animation: reflection 2s ease-in-out infinite;
}

@keyframes reflection {
  0% {
    transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@-webkit-keyframes reflection {
  0% {
    -webkit-transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    -webkit-transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    -webkit-transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    -webkit-transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@-moz-keyframes reflection {
  0% {
    -moz-transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    -moz-transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    -moz-transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    -moz-transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@-ms-keyframes reflection {
  0% {
    -ms-transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    -ms-transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    -ms-transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    -ms-transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@-o-keyframes reflection {
  0% {
    -o-transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    -o-transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    -o-transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    -o-transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@keyframes reflection {
  0% {
    transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@-webkit-keyframes reflection {
  0% {
    -webkit-transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    -webkit-transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    -webkit-transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    -webkit-transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@-moz-keyframes reflection {
  0% {
    -moz-transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    -moz-transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    -moz-transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    -moz-transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@-ms-keyframes reflection {
  0% {
    -ms-transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    -ms-transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    -ms-transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    -ms-transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

@-o-keyframes reflection {
  0% {
    -o-transform: scale(0) rotate(45deg);
    opacity: 0;
  }

  80% {
    -o-transform: scale(0) rotate(45deg);
    opacity: 0.5;
  }

  81% {
    -o-transform: scale(4) rotate(45deg);
    opacity: 1;
  }

  100% {
    -o-transform: scale(50) rotate(45deg);
    opacity: 0;
  }
}

.mask-bg {
  color: transparent;
  display: inline-block;
  font-size: 36px;
  font-weight: bold;
  overflow: hidden;
  position: relative;
  transition: color 0ms 450ms;
}

.mask-bg::after {
  background: linear-gradient(to right, #362ae0 0%, #3b79cc 50%, #42d3ed 100%);
  bottom: 0;
  content: '';
  display: block;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transform: translate(0, 100%);
}

.mask-bg.is-animated {
  color: #362ae0;
}

.mask-bg.is-animated::after {
  animation: mask-bg 1.2s cubic-bezier(0.8, 0, 0.170, 1);
}

@keyframes mask-bg {
  0% {
    transform: translate(0, 101%)
  }

  40%,
  60% {
    transform: translate(0, 0%)
  }

  100% {
    transform: translate(0, -100%)
  }
}