body  *{
    font-family: serif;
}

a{
    text-decoration: none;
}    

#particles-js {
    position: absolute;
    z-index: 1;
    top:0;
    left:0;
    width: 100%;
    height: 100%;
}

.wrapper{
    position: relative;
    z-index: 0;
    height: 93vh;
    background-image: url(../img/entrance/entrance_backgroundimage.png);
    background-size: cover;
    background-position : center;
}

.contents{
    height:100%;
    position: relative;
    z-index: 2;
}

.entrance-contents{
    display: flex;
    height:35%;
    margin:2% 2%;
}

.sanka{
    flex-direction : row
}

.repro{
    flex-direction : row-reverse
}

.entrance-contents-logo{
    height:25%;
}


.entrance-img-area{
    /* width: 40%; */
}
.entrance-img-area img{
    height:100%;
    object-fit: cover;
}

.entrance-text-area{
    width: 45%;
    height:70%;
    margin :auto 0;
    padding: 15px;
}
.entrance-text-area.sanka{
    background: rgba(237, 228, 224, 0.7);
}
.entrance-text-area.repro{
    background: rgba(200, 219, 190, 0.7);
}

.sanka .entrance-title{
    border-bottom: solid 1px rgb(255, 143, 69);
}

.repro .entrance-title{
    border-bottom: solid 1px rgb(0, 184, 144);
}

.entrance-title{
    padding:15px 0px;
    font-size:3.5rem;
    letter-spacing: 0.7rem;
    text-shadow: 3px 3px 2px snow;
    margin-bottom: 20px;
}
.entrance-text{
    font-size:1.7rem;
}

.entrance-button{
    width: 80px;
    height: 80px;
    line-height: 80px;
    text-align: center;
    font-size:1.5rem;
    font-weight: bold;
    color: snow;
    background-color: rgb(255, 200, 118);
    border-radius: 50%;
    position: relative;
}


.entrance-button.sanka{
    top: 70%;
    right: 7%;
}
.entrance-button.repro{
    top: 70%;
    left: 7%;
}




@media only screen and (max-width: 480px) {
    .wrapper{
        height: 98vh;
        background-image: url(../img/entrance/entrance_backgroundimage_sp.png);
    }
    .entrance-img-area{
        position: absolute;
        height:35%;
    }
    .entrance-img-area.sanka img{
        border-radius: 5% 0% 0% 20%;
    }
    .entrance-img-area.repro img{
        border-radius: 0% 5% 20% 0%;
    }
    .entrance-text-area{
        font-weight: bold !important;
        position: relative;
        top: 70px;
        width: 70%;
        padding: 5px 15px;
        z-index: 10;
    }
    .entrance-text-area.sanka{
        left: 10px;
        background: rgba(255, 255, 255, 0.5);
    }
    .entrance-text-area.repro{
        right: 10px;
        background: rgba(255, 255, 255, 0.7);
    }
    .entrance-title  {
        font-size:1.7rem;
    }  
    .entrance-text  {
        font-size:1.4rem;
    }
    .entrance-button{
        height: 100%;
        font-size:5rem;
        border-radius: 0%;
    }
    .entrance-button.sanka{
        top: 0%;
        right: 2%;
        writing-mode: vertical-rl;
        transform: scale(-1, -1);
    }
    .entrance-button.repro{
        top: 0%;
        left: 2%;
        writing-mode: vertical-rl;
    }
    
  }