/*ボタンデザイン*/

#gamebt {
  margin: -10px 0px 8px 0px;
  padding: 0px 0px 2px 0px;
  /*border: solid 1px;*/
  /* 子要素を水平方向の中央に配置する */
  display: flex;
  justify-content: center;
  flex-wrap: wrap;

}



html {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  font-size: 60%;
  /*rem算出をしやすくするために*/
}

.btn,
a.btn,
button.btn {
  margin: 0px 5px 5px 5px;
  font-size: 1.2rem;
  line-height: 1.2;
  position: relative;
  display: inline-block;
  padding: 1rem 3rem;
  min-width: 165px;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  text-align: center;
  vertical-align: middle;
  text-decoration: none;
  letter-spacing: 0.1em;
  color: #212529;
  border-radius: 2.5rem;
  
  /*フォント指定*/
  font-family: "Noto Sans JP", sans-serif;
  font-optical-sizing: auto;
  font-weight: 800;
  font-style: normal;
  
}

a.category-btn {

  border: solid 2px;
  border-color: #fed937;

  overflow: hidden;

  padding: 1rem 1rem;

  color: #000;
  border-radius: 5px;
  background-image: linear-gradient(180deg, rgba(255, 217, 45, 1) 10%, rgba(255, 206, 54, 1) 44%, rgba(255, 236, 58, 1) 52%, rgba(255, 146, 95, 1));

  box-shadow: 2px 2px 5px -2px #000000,
  1px 1px 4px rgba(0,0,0,0.4) inset;
  
  font-size: 85%;
  text-shadow:
    1px 1px 2px #fff,
    -1px 1px 2px #fff,
    -1px -1px 0 #fff,
    1px -1px 0 #fff;

}

a.category-btn span {
  position: relative;
  z-index: 1;
}

a.category-btn:before {
  position: absolute;
  top: 0;
  left: calc(-150% + 50px);

  width: 150%;
  height: 500%;

  content: '';
  -webkit-transition: all .3s ease-in-out;
  transition: all .3s ease-in-out;
  -webkit-transform: rotate(45deg) translateX(0) translateY(0);
  transform: rotate(45deg) translateX(0) translateY(0);

  background: #fff;
}

a.category-btn:after {
  position: absolute;
  top: -400%;
  right: calc(-150% + 50px);

  width: 150%;
  height: 500%;

  content: '';
  -webkit-transition: all .3s ease-in-out;
  transition: all .3s ease-in-out;
  -webkit-transform: rotate(45deg) translateX(0) translateY(0);
  transform: rotate(45deg) translateX(0) translateY(0);

  background: #fff;
}

a.category-btn:hover:before {
  -webkit-transform: rotate(45deg) translateX(0) translateY(-50%);
  transform: rotate(45deg) translateX(0) translateY(-50%);
}

a.category-btn:hover:after {
  -webkit-transform: rotate(45deg) translateX(0) translateY(50%);
  transform: rotate(45deg) translateX(0) translateY(50%);
}

.contentsbox {
padding:15px 0px 0px 0px;
}