*{
    padding: 0;
    margin: 0;
  }
  /*關於科系*/
   header{
    background-color: #000000;
    height: 100px;
    width:100%;
    position:relative;
   }
   h1{
    color:rgb(254, 254, 254);
    position:relative;
    left:80px;
    top:0;
    line-height:80px;
    font-family: 'Noto Serif SC', serif;
   }
   header h1{
    left:15%;
    position:absolute;
    transform:translateX(-50%);
   }
   header ul{
    position:absolute;
    right:5vw;
    top:0;
    line-height:80px;
    font-size:18px;
    font-family: 'Noto Serif SC', serif;
   }
   header li{
    display:inline;
    margin-right:4vw;
   }
   header a{
    color:rgb(254, 254, 254);
    text-decoration:none;
   }
   header a:hover{
    text-decoration:underline;
   }
   main{
    background-color:#f3efef;
    line-height:30px;
    margin: 7%; 
    border-radius: 15px;
    font-size: larger;
   }
   main a{
    color:rgb(39, 34, 34);
    text-decoration:none;
   }
   main a:hover{
    text-decoration:underline;
   }
   input:focus{
    outline:none;
    border-color:bisque;
   }
   .menu{
    display:none;
   }
   @media screen and(max-width:768px){
    header ul {
      display:none;
    }
   } 
   .menu{
    display:block;
    background-color: transparent;
    color:white;
    font-size:35px;
    position:absolute;
    top:15px;
    left:20px;
    border:none;
    cursor:pointer;
   }
   #footer {
    position: relative;
    background-color: #000000;
    color: #c6c9cd;
    text-align: center;
    bottom: 0;
    width: 100%;
    height: 3rem;            
  }
  table {
    line-height: 8;
    justify-content: center;
  }
  @media screen and(max-width:768px){
    header ul {
      display:none;
    }
   } 
   .btn-98,
.btn-98 *,
.btn-98 :after,
.btn-98 :before,
.btn-98:after,
.btn-98:before {
  border: 0 solid;
  box-sizing: border-box;
}
.btn-98 {
  -webkit-tap-highlight-color: transparent;
  appearance: button;
  background-color: #000;
  background-image: none;
  color: #fff;
  cursor: pointer;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    Segoe UI, Roboto, Helvetica Neue, Arial, Noto Sans, sans-serif,
    Apple Color Emoji, Segoe UI Emoji, Segoe UI Symbol, Noto Color Emoji;
  font-size: 100%;
  line-height: 1.5;
  margin: 0;
  mask-image: -webkit-radial-gradient(#000, #fff);
  padding: 0;
}
.btn-98:disabled {
  cursor: default;
}
.btn-98:-moz-focusring {
  outline: auto;
}
.btn-98 svg {
  display: block;
}
.btn-98 [hidden] {
  display: none;
}
.btn-98 {
  --thickness: 4px;
  background: none;
  box-sizing: border-box;
  -webkit-clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% + var(--thickness)),
    0 calc(100% + var(--thickness))
  );
  clip-path: polygon(
    0 0,
    100% 0,
    100% calc(100% + var(--thickness)),
    0 calc(100% + var(--thickness))
  );
  display: block;
  font-weight: 900;
  mask-image: none;
  padding: 2px 0;
  position: relative;
  text-transform: uppercase;
}
.btn-98:before {
  background: #fff;
  bottom: calc(var(--thickness) * -1);
  content: "";
  display: block;
  height: var(--thickness);
  left: 0;
  pointer-events: none;
  position: absolute;
  width: 100%;
}
.btn-98:hover:before {
  -webkit-animation: slide 0.5s ease;
  animation: slide 0.5s ease;
}
@-webkit-keyframes slide {
  0% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(100%);
  }
  51% {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}
@keyframes slide {
  0% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(100%);
  }
  51% {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}
a[href="index.html"] {
  color: hsl(0, 0%, 100%);
  text-decoration: none; 
  font-family: Arial, Helvetica, sans-serif;
  font-size:20px;
}