:root {
  font-size: 16px;
}

@media only screen and (max-width: 768px) {
  :root {
    font-size: 14px;
  }
  :root .content_wrap {
    top: 30%;
  }
  :root h1 {
    font-size: 10rem;
    width: 100%;
  }
  :root .img_wrap {
    display: block;
    top: 85%;
  }
  :root .img_wrap .main-wrap img {
    width: 120px;
  }
  :root .img_wrap .sub-wrap img {
    top: 0;
  }
}

@media only screen and (max-width: 280px) {
  :root {
    font-size: 12px;
  }
  :root .content_wrap {
    padding: 0 10px;
  }
}

html,
body {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

body {
  text-align: center;
  width: 100%;
  height: 100vh;
  margin: 0 auto;
  padding: 0;
  background-color: #f5f5f5;
  color: #ebebeb;
  position: relative;
}

.content_wrap {
  max-width: 1245px;
  margin: 0 auto;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

img {
  width: 280px;
  height: auto;
}

h1 {
  font-size: 45rem;
  line-height: 25rem;
  margin: 0 auto;
}

.img_wrap {
  display: flex;
  text-align: center;
  justify-content: center;
  align-items: center;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #000;
  font-weight: bold;
  font-size: 2rem;
}

.sub-img {
  position: relative;
  top: -200px;
}