.mainviual{
  height: 20vh;
  width: 100%;
  position: relative;
  z-index: 0;
  background: #F60;
  margin-bottom: 30px;
  & h1{
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    width: fit-content;
    height: fit-content;
    color: #fff;
    text-shadow: 1px 1px 3px #3b3b3b;
    letter-spacing: 1px;
    line-height: 1.7;
    font-size: 200%;
  }
}
& img{
  display: block;
  width: 95%;
  height: auto;
  margin: 0 auto;
}