.sec1_parent{
    width: 100%;
    height: 35vw;
    background-image: url("../image/sec1_1.jpeg");
    background-size:100%;
    background-position:100%;
    background-repeat: no-repeat;
    position: relative;  
    display:inline-block;
    font-family:"Yu Gothic", "游ゴシック", YuGothic, "游ゴシック体", "ヒラギノ角ゴ Pro W3", "メイリオ", sans-serif;
}

.sec1_parent::after{
    content: '';
    background-color: rgba(0, 77, 71, 0.6); 
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
}

.sec1_div {
    text-align: right;
    margin-bottom: 0;
}

.sec1_text{
    width: 100%;
    text-align: right;
    position: relative;
    z-index: 1;
}

.sec1_explain{
    margin-right: 2vw;
}

.sec1_text1{
    font-size: 1.67vw;
    padding-top: 8vw;
    padding-bottom: 0.5vw;
    color: aliceblue; 
    font-family: "Yu Gothic Medium";
}

.sec1_text2{
    font-size: 3.8vw; 
    color: aliceblue;
    margin-bottom: 0;
    font-weight: bold;
    text-shadow:3px 4px 5px #444444;
}

.sec1_text3{
    font-size: 1.7vw; 
    margin-top: 1.5vw;
    background-position: right;
    color: aliceblue; 
}

.sec1_text2_small{
    font-size: 3.2vw; 
    color: aliceblue;
    margin-bottom: 0;
    font-weight: bold;
    text-shadow:3px 4px 5px #444444;
}

.sec1_dbtext{
    font-size: 3.8vw;
    color:#ec6f71
}

.sec1_bgcolor{
    background-color :#2b616b;
    padding: 0.5vw 1.2vw 0.5vw 1.2vw;
}
  
@media (max-width:768px) {
    .sec1_parent{
        height: 42vw;
    }

    .sec1_explain{
        margin-right: 4vw;
    }
    
    .sec1_text1{
        font-size: 2.5vw;
        padding-top: 12vw;
    }
    
    .sec1_text2{
        font-size: 4.5vw; 
    }
    
    .sec1_text3{
        font-size: 2.7vw; 
        margin-top: 1.5vw;
    }
    
    .sec1_text2_small{
        font-size: 3.7vw; 
    }
    
    .sec1_dbtext{
        font-size: 4.5vw;
    }
}



@media (max-width: 512px){
    .sec1_parent{
        height: 50vw;
        margin-top: 6vw;
        background-size:110%;
    background-position:100%;
    }

    .sec1_explain{
        margin-right: 7vw;
    }
    
    .sec1_text1{
        font-size: 3.5vw;
        padding-top: 8vw;
    }
    
    .sec1_text2{
        font-size: 5.5vw; 
    }
    
    .sec1_text3{
        font-size: 3.8vw; 
        margin-top: 2vw;
    }
    
    .sec1_text2_small{
        font-size: 4.3vw; 
    }
    
    .sec1_dbtext{
        font-size: 5.5vw;
    }
}