/*以下是修正全螢幕中間文字CSS設定*/
section#intor-header{
   background-image: url(../img/1250.jpg);
   background-size: cover;
}
section#intor-header .wrap-headline{
   position: relative;
   padding-top: 20%;
   padding-bottom: 10%; 
}
section#intor-header h1, section#intor-header h2{
  color: #fff;
}
section#intor-header h2{
  font-size:  1.5rem;
}
section#intor-header hr{
  width: 10%;
}
section#intor-header .btn-default{
  background-color: rgba(255,255,255,0.5);
  border: none;
}

.navbar-brand img{
  height: 100%;
}


/*以下是修正選navbar CSS設定*/
/*@media (max-width: 991px) {
    .navbar-header {
        float: none;
    }
    .navbar-toggle {
        display: block;
    }

    .navbar-collapse {
        border-top: 1px solid transparent;
        box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
    }
    .navbar-collapse.collapse {
        display: none!important;
    }
    .navbar-nav>li {
        float: none;
    }
    .navbar-nav>li>a {
        padding-top: 10px;
        padding-bottom: 10px;
    }
    .navbar-text {
        float: none;
        margin: 15px 0;
    }*/
    /* since 3.1.0 */
/*    .navbar-collapse.collapse.in { 
        display: block!important;
    }
    .collapsing {
        overflow: hidden!important;
    }
}*/



/*以下是修正Fullscreen Overlay Nav  CSS設定*/
<style>
body {
    margin: 0;
    font-family: 'Lato', sans-serif;

}

.overlay {
    height: 0%;
    width: 100%;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0, 0.9);
    overflow-y: hidden;
    transition: 0.5s;
}

.overlay-content {
    position: relative;
    top: 25%;
    width: 100%;
    text-align: center;
    margin-top: 30px;
}

.overlay a {
    padding: 8px;
    text-decoration: none;
    font-size: 36px;
    color: #818181;
    display: block;
    transition: 0.3s;
}

.overlay a:hover, .overlay a:focus {
    color: #f1f1f1;
}

.overlay .closebtn {
    position: absolute;
    top: 20px;
    right: 45px;
    font-size: 60px;
}

@media screen and (max-height: 450px) {
  .overlay {overflow-y: auto;}
  .overlay a {font-size: 20px}
  .overlay .closebtn {
    font-size: 40px;
    top: 15px;
    right: 35px;
  }
}


 
</style>