main{position:relative;width:100%;height:75vh;background-size:cover}main:before{position:absolute;top:0;display:block;content:"";width:100%;height:100%;background-color:rgba(0,0,0,0.3)}main #txt_catch{position:absolute;z-index:10;top:0;left:0;right:0;bottom:0;margin:auto;width:100%;height:2.4em;line-height:1;font-family:'Noto Sans Bold';font-size:3.3rem;color:#fff;text-align:center}@media screen and (max-width: 768px){img{max-width:100%;height:auto}main{position:relative;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:center;-ms-flex-pack:center;justify-content:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;width:100%;height:80vh;background-size:cover}main:before{position:absolute;top:0;display:block;content:"";width:100%;height:100%;background-color:rgba(0,0,0,0.3)}main #txt_catch{position:relative;z-index:9999;width:80%;height:auto;line-height:1.8;font-family:'Noto Sans Bold';font-size:2.3rem;color:#fff;text-align:center}main #txt_catch span{display:block;font-size:1.4rem}}