* {
  margin: 0;
  padding: 0;
}

html,
body {
  box-sizing: border-box;
  height: 100%;
  width: 100%;
}

body {
  background: #FFF;
  font-family: 'Noto Sans JP', sans-serif;
  font-weight: 400;
}

.buttons {
  display: flex;
  flex-direction: row;
      flex-wrap: wrap;
  justify-content: center;
  text-align: center;
  width: 100%;
  height: 100%;
  margin: 0 auto;
/*   padding: 2em 0em; */
}

.container {
  align-items: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  background-color: #FFF;
  padding:  40px 0px;
  width: 240px;
}



.btn {
  letter-spacing: 0.1em;
  cursor: pointer;
  font-size: 14px;
  font-weight: 400;
  line-height: 45px;
  max-width: 160px;
  position: relative;
  text-decoration: none;
  text-transform: uppercase;
  width: 100%;
}
.btn:hover {
  text-decoration: none;
}

/*btn_background*/
.effect04 {
  --uismLinkDisplay: var(--smLinkDisplay, inline-flex);
  display: var(--uismLinkDisplay);
  color: #000;
  outline: solid  2px #000;
  position: relative;
  transition-duration: 0.4s;
  overflow: hidden;
}

.effect04::before,
.effect04 span{
    margin: 0 auto;
	transition-timing-function: cubic-bezier(0.86, 0, 0.07, 1);
	transition-duration: 0.4s;
}

/* 文字1を上に */
.effect04:hover{

  background-color: #000;
}

/* HOVERしたら文字1を上に */
.effect04:hover span{
  -webkit-transform: translateY(-400%) scale(-0.1,20);
          transform: translateY(-400%) scale(-0.1,20);
}

/*文字2*/
.effect04::before{
  content: attr(data-sm-link-text);
	color: #FFF;
  position: absolute;
  left: 0;
  right: 0;
  margin: auto;
  -webkit-transform: translateY(500%) scale(-0.1,20);
          transform: translateY(500%) scale(-0.1,20);
}

/* HOVERしたら文字2を上に */
.effect04:hover::before{
  letter-spacing: 0.05em;
  -webkit-transform: translateY(0) scale(1,1);
          transform: translateY(0) scale(1,1);
}