@charset "UTF-8";
.mainvisual { position: relative; height: 100vh; background-color: #909090
    width: 100vw;
    overflow: hidden;
}

/*スクロールボタンの指定*/
.scroll { position: absolute; width: 100%; bottom: 0; text-align: center; }
.scroll a {line-height: 1.5;
	text-shadow: #6d6d6d 1px 0 10px; z-index: 5; position: relative; display: inline-block; font-size: 20px; font-weight: bold; color: #fff; text-decoration: none; padding: 0 0 50px; /*矢印を作成する*/ }
.scroll a:before { content: ""; position: absolute; width: 10px; height: 10px; left: 0; right: 0; bottom: 40px; margin: auto; border-bottom: 2px solid #fff; border-right: 2px solid #fff; transform: rotate(45deg); animation: move 2s infinite; }


/*矢印をアニメーションする*/
@keyframes move { 0% { transform: rotate(45deg) translate(0, 0); }
  20% { transform: rotate(45deg) translate(10px, 10px); }
  40% { transform: rotate(45deg) translate(0, 0); } }

@import url('https://fonts.googleapis.com/css?family=Exo:400,700');

*{
    margin: 0px;
    padding: 0px;
}

body{
    font-family: 'Exo', sans-serif;
}


.context {
    width: 100%;
    position: absolute;
    
}

.context h1{
    text-align: center;
    color: #fff;
    font-size: 50px;
}


.area{
    width: 100%;
    height:75vh;
    z-index: 1;
}

.faqarea{
    height: 15vh;
    z-index: 1;
}

.circles{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.circles li{
    position: absolute;
    display: block;
    list-style: none;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    animation: animate 25s linear infinite;
    bottom: -150px;
    z-index: 1;
    
}



.circles li:nth-child(1){
    left: 25%;
    width: 80px;
    height: 80px;
    animation-delay: 0s;
}


.circles li:nth-child(2){
    left: 10%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
    animation-duration: 12s;
}

.circles li:nth-child(3){
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
}

.circles li:nth-child(4){
    left: 40%;
    width: 60px;
    height: 60px;
    animation-delay: 0s;
    animation-duration: 18s;
}

.circles li:nth-child(5){
    left: 65%;
    width: 20px;
    height: 20px;
    animation-delay: 0s;
}

.circles li:nth-child(6){
    left: 75%;
    width: 110px;
    height: 110px;
    animation-delay: 3s;
}

.circles li:nth-child(7){
    left: 35%;
    width: 150px;
    height: 150px;
    animation-delay: 7s;
}

.circles li:nth-child(8){
    left: 50%;
    width: 25px;
    height: 25px;
    animation-delay: 15s;
    animation-duration: 45s;
}

.circles li:nth-child(9){
    left: 20%;
    width: 15px;
    height: 15px;
    animation-delay: 2s;
    animation-duration: 35s;
}

.circles li:nth-child(10){
    left: 85%;
    width: 150px;
    height: 150px;
    animation-delay: 0s;
    animation-duration: 11s;
}



@keyframes animate {

    0%{
        transform: translateY(0) rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }

    100%{
        transform: translateY(-2500px) rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }

}