body {
    margin : 0; 
    padding : 0;
}

.main {
    position: relative;
    width: 100%;
    margin: 0 auto 50px;
    max-width: 960px;
}

.main > div {
    width: 96%;
    margin: 0 auto;
}

img {
    width: 100%;
}

.btm {
    width: 80%;
    max-width: 900px;
    position: fixed;
    left:0;
    right:0;
    bottom: 20px;
}

.btm > .private-alpha {
    position: absolute;
    width: 27%;
    top: 55%;
    left: 23%;
    aspect-ratio: 11/1;
    background-color: rgba(0,0,0,0.0);
}
.btm > .accept-alpha {
    position: absolute;
    width: 27%;
    top: 55%;
    left: 53%;
    aspect-ratio: 11/1;
    background-color: rgba(0,0,0,0.0);
}

.btm > .private-beta {
    position: absolute;
    width: 29%;
    height: 3%;
    top: 73%;
    left: 62%;  
    background-color: rgba(0,0,0,0.0);
}
.btm > .accept-beta {
    position: absolute;
    width: 27%;
    height: 3%;
    top: 79.5%;
    left: 62%;
    background-color: rgba(0,0,0,0.0);
}

.btm > .private-gamma {
    position: absolute;
    width: 27%;
    top: 56%;
    left: 23%;
    aspect-ratio: 11/1;
    background-color: rgba(0,0,0,0.0);
}
.btm > .accept-gamma {
    position: absolute;
    width: 27%;
    top: 56%;
    left: 53%;
    aspect-ratio: 11/1;
    background-color: rgba(0,0,0,0.0);
}

input.alpha {
    position: absolute;
    top: 30.5%;
    left: 20%;
    background-color: rgba(0,0,0,0);
    border: 0;
    border-radius: 10px;
    width: 59%;
    font-size: 4.1vw;
    text-align: center;
    aspect-ratio: 6.5/1;
}

input.beta {
    position: absolute;
    top: 49.5%;
    left: 7.8%;
    background-color: rgba(0,0,0,0.0);
    border:0;
    border-radius: 10px;
    width: 50%;
    font-size: 4.1vw;
    text-align: center;
    aspect-ratio: 6.6/1;
}

input.gamma {
    position: absolute;
    top: 30.5%;
    left: 20%;
    background-color: rgba(0,0,0,0);
    border: 0;
    border-radius: 10px;
    width: 59%;
    font-size: 4.1vw;
    text-align: center;
    aspect-ratio: 6.5/1;
}

button.alpha {
    position: absolute;
    bottom: 13%;
    right: 3%;
    border-radius: 10px;
    border: 0;
    background-color: rgba(0,0,0,0.0);
    width: 52%;
    height: 20%;
}

button.beta {
    position: absolute;
    top: 45.5%;
    right: 9%;
    border-radius: 10px;
    border: 0;
    background-color: rgba(0,0,0,0.5);
    width: 29.5%;
    height: 21.5%;
}

button.gamma {
    position: absolute;
    bottom: 7.6%;
    right: 3%;
    border-radius: 10px;
    border: 0;
    background-color: rgba(0,0,0,0.0);
    width: 63%;
    aspect-ratio: 5/1;
}

button.alpha:hover,
button.beta:hover,
button.gamma:hover {
    cursor: pointer;
}

.popup {
    display: none;
    justify-content: center;
    align-items: center;
    position: fixed;
    z-index: 20;
    width: 100%;
    height: 100%; 
    background: rgba(255,255,255,0.9);
}

.popup > .popup-container {
    width: 90%;
    max-width: 500px;
    position: relative;
}

.popup > .popup-container > img {
    width: 100%;
    
}

.popup > .popup-container > .close {
    position: absolute;
    top: 2.1%;
    right: 3.6%;
    width: 8%;
    aspect-ratio: 1/1;
    background-color: rgba(0,0,0,0.0);
}