html{
    overflow-x:hidden;}

/* 背景画像 */
.campagin_back {
  background: url(https://xs394745.xsrv.jp/hokunez/html/user_data/assets/img/top/campaignback.jpg) no-repeat center center / cover;
}

/* グラデーション背景 */
.grback {
  background: linear-gradient(90deg, rgba(65,88,208,0.7) 0%, rgba(221,46,96,1) 0%, rgba(0,91,151,1) 93%);
}