*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}
body{
    background-color: #121212;
    overflow: hidden;
}
.myARC{
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80vh;
    background-color: #121212;
    overflow: hidden;
}
.myButton{
    text-align: center;
}
/*以下是方舟反應爐的程式*/
.loader{
    position: relative;
    width: 300px;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.loader_back{
    position: absolute;
    width: 300px;
    height: 300px;
    /* 原來 8px */
    border: dashed 16px #00ffe7;
    border-radius: 50%;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: spin 5s infinite reverse;
}
/* 內圈 */
.loader_back:before{
    position: absolute;
    content: '';
    width: 96%;
    height: 96%;
    border: dashed 8px #00ffe7;
    border-radius: 50%;
    z-index: 3;
    animation: spin 4s infinite;
}
.loader_blur{
    position: absolute;
    width: 115%;
    height: 115%;
    border-radius: 50%;
    background-color: #00ffe7;
    opacity: 0.4;
    filter: blur(50px);
    z-index: 4;
}
.loader_black-item{
    position: absolute;
    width: 82%;
    height: 82%;
    border: solid 8px #00ffe7;
    border-radius: 50%;
    border-left-color: transparent;
    z-index: 3;
    opacity: 0.2;
    animation: spin 5s infinite reverse;
}
.loader_black-item:nth-child(3){
    width: 55%;
    height: 55%;
    border-right-color: transparent;
    opacity: 0.6;
    animation: spin 3s ease infinite reverse;
}
.loader_front{
    position: absolute;
    /* 原來46 */
    width: 38%;
    /* 原來46 */
    height: 38%;
    border-radius: 50%;
    background-color: #befff9;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
}
.loader_front:before{
    position: absolute;
    content: '';
    width: 90%;
    height: 90%;
    border-radius: 50%;
    background-color: #fff;
    z-index: 5;
}
.loader_front-item{
    position: absolute;
    width: 150%;
    height: 150%;
    border: solid 8px #00ffe7;
    border-radius: 50%;
    border-top-color: transparent;
    border-bottom-color: transparent;
    z-index: 5;
    animation: spin 2s infinite;
}
@keyframes spin{
    100%{
        transform: rotate(360deg);
    }
}
/*以下是按鈕的程式*/
.btn{
    position: relative;
    text-decoration: none;
    padding: 20px 30px;
    color: #3bd9d9;
    border: 3px solid #3bd9d9;
    border-radius: 50px;
    letter-spacing: 3px;
    font-weight: bold;
    font-size: 30px;
    text-transform: uppercase;
    overflow: hidden;
    transition: color 0.3s;
    box-shadow: 0.3s;
    border-color: 0.3s;
}
.btn:hover{
    box-shadow:
    0 0 10px rgba(0, 255, 255, 1),
    0 0 40px rgba(0, 255, 255, 0.7);
    /*原來是#00ffff*/
    border-color:#00ffff;
    color:#00ffff;
}
.btn:before{
    content: '';
    top: -10px;
    left: -70px;
    position: relative;
    width: 40px;
    height: 125%;
    background-color: #00ffff;
    transform: skewX(-20deg);
    filter: blur(15px);
}
.btn:hover:before{
    transform: translate(300px) skewX(-20deg);
    transition: transform 0.7s;
}