@charset "UTF-8";
* {
  font-family: "微軟正黑體", sans-serif;
  text-align: center;
  padding: 4px;
}

.navbar-brand {
  font-weight: 900;
}

h3 {
   
    margin-top: -20px;
}

img.art {
  width: 28%;
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-top: -64px;
  z-index: -1;
  opacity: 0.8;
}

footer {
  position: fixed;
  left: 0;
  bottom: 0;
  width: 100%;
  background-color: #8b2f31;
  color: white;
  text-align: center;
}

#openDoor {
  margin: 8px;
}

#studentId {
  width: 320px;
  max-width: 100%;
  border-radius: 8px;
  border: solid 1px #aaa;
  height: 40px;
  display: block;
  margin: 0 auto;
}

p.cnt {
  font-size: 12px;
  line-height: 12px;
  /*color: white;*/
  /*文字內容要顯示時改黑色*/
}



@media only screen and (max-width: 992px) {
  img.art {
    width: 32%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: -56px;
    z-index: -1;
    opacity: 0.8;
  }
 }


@media only screen and (max-width: 767px) {
  img.art {
    width: 40%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: -48px;
    z-index: -1;
    opacity: 0.8;
  }
 }


@media only screen and (max-width: 414px) {
  #studentId {
    width: 72%;
  }

  img.art {
    width: 80%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: -24px;
  }
}

@media only screen and (max-width: 361px) {
  p.cnt {
    font-size: 12px;
    line-height: 12px;
 }
  
}