/* クラスによるCSS修飾指定
btn-yuya	基本（基本色緑）
is-red	ボタン赤
is-blue	ボタン青
is-black	ボタン黒
is-reflection	光スラッシュ
is-trembling	矢印アイコン動かす
is-bounce	ボタンバウンド
is-purun	ボタンぽよぽよ
*/
 
/* 2つ並べた時の余白 */
.btn-yuya + .btn-yuya a {
  margin-top: 0;
}
 
/* 光沢 */
.is-reflection a {
  overflow: hidden;
}
.is-reflection a:after {
  -moz-animation: is-reflection 4s ease-in-out infinite;
  -moz-transform: rotate(45deg);
  -ms-animation: is-reflection 4s ease-in-out infinite;
  -ms-transform: rotate(45deg);
  -o-animation: is-reflection 4s ease-in-out infinite;
  -o-transform: rotate(45deg);
  -webkit-animation: is-reflection 4s ease-in-out infinite;
  -webkit-transform: rotate(45deg);
  animation: is-reflection 4s ease-in-out infinite;
  background-color: #fff;
  content: " ";
  height: 100%;
  left: 0;
  opacity: 0;
  position: absolute;
  top: -180px;
  transform: rotate(45deg);
  width: 30px;
}
/* アニメーション遅延 */
.is-reflection + .is-reflection a:after {
  -webkit-animation-delay: .3s;
  animation-delay: .3s;
}
@keyframes is-reflection {
  0% { -webkit-transform: scale(0) rotate(45deg); transform: scale(0) rotate(45deg); opacity: 0; }
  80% { -webkit-transform: scale(0) rotate(45deg); transform: scale(0) rotate(45deg); opacity: 0.5; }
  81% { -webkit-transform: scale(4) rotate(45deg); transform: scale(4) rotate(45deg); opacity: 1; }
  100% { -webkit-transform: scale(50) rotate(45deg); transform: scale(50) rotate(45deg); opacity: 0; }
}
@-webkit-keyframes is-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; }
}
 
/* ボタン矢印揺れ */
.is-trembling a:before {
  -webkit-animation-name:is-trembling;
  -webkit-animation-duration:.8s;
  -webkit-animation-iteration-count:infinite;
  -webkit-animation-timing-function:ease;
  -moz-animation-name:is-trembling;
  -moz-animation-duration:1s;
  -moz-animation-iteration-count:infinite;
  -moz-animation-timing-function:ease;
}
@-webkit-keyframes is-trembling {
  0% {-webkit-transform:translate(-3px, 0);}
  100% {-webkit-transform:translate(0, 0);}
}
 
/* ボタンバウンド */
.is-bounce {
  animation: bounce 4s infinite;
  -moz-animation: bounce 4s infinite;
  -webkit-animation: bounce 4s infinite;
  -webkit-animation-delay: 4s;
  animation-delay: 4s;
}
@-webkit-keyframes bounce {
  0%, 4%, 10%, 18%, 100% {-webkit-transform: translateY(0);}
  5% {-webkit-transform: translateY(-6px);}
  12% {-webkit-transform: translateY(-4px);}
}
@keyframes bounce {
  20%, 24%, 30%, 34%, 100% {-webkit-transform: translateY(0);transform: translateY(0);}
  25% {-webkit-transform: translateY(-6px);transform: translateY(-6px);}
  32% {-webkit-transform: translateY(-4px);transform: translateY(-4px);}
}
/* アニメーション遅延 */
.is-bounce + .is-bounce {
  -webkit-animation-delay: .5s;
  animation-delay: .5s;
}
 
/* ぽよぽよ */
.is-purun {
  -webkit-animation: is-purun 5s infinite;
  -moz-animation: is-purun 5s infinite;
  animation: is-purun 5s infinite;
}
@-webkit-keyframes is-purun {
   0% { -webkit-transform: scale(1.0, 1.0) translate(0%, 0%); }
   4% { -webkit-transform: scale(0.9, 0.9) translate(0%, 3%); }
   8% { -webkit-transform: scale(1.1, 0.8) translate(0%, 7%); }
  12% { -webkit-transform: scale(0.9, 0.9) translate(0%, -7%); }
  18% { -webkit-transform: scale(1.1, 0.9) translate(0%, 3%); }
  25% { -webkit-transform: scale(1.0, 1.0) translate(0%, 0%); }
}
@keyframes is-purun {
   0% { transform: scale(1.0, 1.0) translate(0%, 0%); }
   4% { transform: scale(0.9, 0.9) translate(0%, 3%); }
   8% { transform: scale(1.1, 0.8) translate(0%, 7%); }
  12% { transform: scale(0.9, 0.9) translate(0%, -7%); }
  18% { transform: scale(1.1, 0.9) translate(0%, 3%); }
  25% { transform: scale(1.0, 1.0) translate(0%, 0%); }
}
/* アニメーション遅延 */
.is-purun + .is-purun {
  -webkit-animation-delay: .5s;
  animation-delay: .5s;
}

@media only screen and (max-width: 767px) {
  .btn-yuya a {
    font-size: 1.3em;
    margin: 0 auto 1em;
    width: 94%;
  }
}