body {
  font-family: 'Noto Sans JP', sans-serif;
  position: relative;
}
.top_desc{
  width: 70vw;
  margin: 10vh auto 0 auto;
  font-weight: bold;
}
.login_area{
  width: 70vw;
  margin: 5vh auto 0 auto;
  background-color: #f0f0f0;
  padding: 2rem;
  border-radius: 20px;
  box-sizing: border-box;
}
.login_ctls{
  margin:1rem auto 0 auto;
  width: 70%;
}
.login_lbl{
  display:inline-block;
  width: 120px;
  font-weight: bold;
  vertical-align: top;
  margin-top: 6px;
}
.login_txt{
  display:inline-block;
  width:calc(100% - 130px);
}
.login_txt input{
  box-sizing: border-box;
  height: auto;
  font-size: 1.1rem;
  display: inline-block;
  width: 100%;
  padding: 0.375rem 0.75rem;
  line-height: 1.5;
  color: #495057;
  background-color: #fff;
  background-clip: padding-box;
  border: 1px solid #ced4da;
  border-radius: 0.25rem;
  transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}
.err_box{
  margin:.5rem auto 0 auto;
  width: 70%;
  color: #e45555;
  font-weight: bold;
  min-height: 30px;
}
.login_btn {
	display: block;
	text-align: center;
	vertical-align: middle;
	text-decoration: none;
  font-size: 1rem;
	width: 170px;
	margin: 1rem auto 1rem auto;
	padding: .7rem 2rem;
	border: 2px solid #3a3a3a;
	background: #3a3a3a;
	color: #fff;
	border-radius: 100vh;
	transition: 0.3s;
}
.login_btn:hover {
	opacity: 0.7;
}

@media screen and (max-width: 992px) {

  .top_desc {
    width: 85vw;
    margin: 5vh auto 0 auto;
  }
  .login_area {
    width: 85vw;
    padding: 1rem;
  }
  .login_ctls {
    margin: 1rem;
    width: calc(100% - 2rem);
  }
  .login_lbl {
    display: block;
    width: auto;
    margin: 0 0 0.5rem 0;
  }
  .login_txt{
    display: block;
    width: 100%;
  }
  .login_err {
    width: calc(100% - 2rem);
  }
}