.ob-404-c {
  overflow: hidden;
}
.ob-404-l {
  float: left;
  width: 45%;
}
.ob-404-l > img {
  max-width: 100%;
}
.ob-404-r {
  float: right;
  width: 45%;
  text-align: center;
}
.ob-404-r > h1 {
    margin: 0;
    font-size: 40px;
    font-size: 4.0rem;
    padding-top: 52px;
}
.ob-404-bs {
  padding-top: 25px;
}
.ob-404-bs .btn {
    font-size: 16px;
    font-size: 1.6rem;
    width: 100%;
    max-width: 160px;
    padding: 0;
    height: 42px;
    line-height: 40px;
}