@charset "utf-8";
/* CSS Document */
/* ここはコピーしなくてOK　*/
div[class*=box] {
    height: 30%;
    width: 160px; 
  display: flex;
  justify-content: center;
  align-items: center;
	margin-top: 15%;
	font-size: 0.9em;
}

.box-3 { background-color: #66A182; }

.btn {
    line-height: 40px;
    height: 40px;
    text-align: center;
    width: 160px;
    cursor: pointer;
}

/* 
========================
      BUTTON ONE
========================
*/
.btn-one {
    color: #FFF;
    transition: all 0.3s;
    position: relative;
}
.btn-one span {
    transition: all 0.3s;
}
.btn-one::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0;
    transition: all 0.3s;
    border-top-width: 1px;
    border-bottom-width: 1px;
    border-top-style: solid;
    border-bottom-style: solid;
    border-top-color: rgba(255,255,255,0.5);
    border-bottom-color: rgba(255,255,255,0.5);
    transform: scale(0.1, 1);
}
.btn-one:hover span {
    letter-spacing: 2px;
}
.btn-one:hover::before {
    opacity: 1; 
    transform: scale(1, 1); 
}
.btn-one::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    transition: all 0.3s;
    background-color: rgba(255,255,255,0.1);
}
.btn-one:hover::after {
    opacity: 0; 
    transform: scale(0.1, 1);
}


/* 
========================
      BUTTON TWO
========================
*/
.btn-two {
    color: #FFF;
    transition: all 0.5s;
    position: relative; 
}
.btn-two span {
    z-index: 2; 
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;   
}
.btn-two::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    transition: all 0.5s;
    border: 1px solid rgba(255,255,255,0.2);
    background-color: rgba(255,255,255,0.1);
}
.btn-two::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    transition: all 0.5s;
    border: 1px solid rgba(255,255,255,0.2);
    background-color: rgba(255,255,255,0.1);
}
.btn-two:hover::before {
  transform: rotate(-45deg);
  background-color: rgba(255,255,255,0);
}
.btn-two:hover::after {
  transform: rotate(45deg);
  background-color: rgba(255,255,255,0);
}


/* 
========================
      BUTTON THREE
========================
*/
.btn-three {
    color: #FFF;
    transition: all 0.5s;
    position: relative;
}
.btn-three::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background-color: rgba(255,255,255,0.1);
    transition: all 0.3s;
}
.btn-three:hover::before {
    opacity: 0 ;
    transform: scale(0.5,0.5);
}
.btn-three::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0;
    transition: all 0.3s;
    border: 1px solid rgba(255,255,255,0.5);
    transform: scale(1.2,1.2);
}
.btn-three:hover::after {
    opacity: 1;
    transform: scale(1,1);
}