*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
html {
    font-size: 62.5%;
}

body {
    font-family: "Noto Sans TC", sans-serif;
    line-height: 1;
    font-weight: 400;
    color: #555;
    font-size: 16px;
    background-color: #fff;
    /* overflow-x: hidden; */
}

a{
    text-decoration: none;
}

.nav{
    background-color: #fff;
    padding: 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px #3C7AB0 solid;

    position: fixed;
    width: 100%;
    top: 0;
}

.mainNav {
    background-color: #D9D9D9;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* position: fixed; */
    width: 100vw;
    /* top:0; */

    font-size: 1.6;
}

.mainNavitem {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
}

.mainNavBtn:link,.mainNavBtn:visited {
    background-color: #ADD1F1;
    border-radius: 1.8rem;
    color: #fff;
    font-weight: 500;
    padding: 1.2rem 2rem;
    font-size: 2rem;
    transition: all 0.3s;
}

.mainNavBtn:hover,.mainNavBtn:active {
    background-color: #3C7AB0;
    transform: scale(1.2);
}

.formBtn {
    background-color: #FF5F05;
    border: none;
    border-radius: 1.5rem;
    color: #fff;
    font-weight: 500;
    padding: 1.2rem 2.4rem;
    font-size: 2rem;
    transition: all 0.3s;
    
    margin-top: 4rem;
}

.formBtn:hover,.formBtn:active {
    transform: scale(0.9);
    box-shadow: 0 0 0.5rem 0.5rem #ffb85a;
}

.Btn:link,.Btn:visited {
    background-color: #ADD1F1;
    border-radius: 10rem;
    color: #fff;
    font-weight: 500;
    padding: 1.2rem 2.4rem;
    font-size: 2rem;
    transition: all 0.3s;
}

.Btn:hover,.Btn:active {
    background-color: #3C7AB0;
    transform: scale(1.2);
}

.loginBtn:link,.loginBtn:visited {
    background-color: #ADD1F1;
    border-radius: 10rem;
    color: #fff;
    font-weight: 500;
    padding: 1.2rem 2.4rem;
    font-size: 2.2rem;
    transition: all 0.3s;
}

.loginBtn:hover,.loginBtn:active {
    background-color: #3C7AB0;
    transform: scale(1.2);
}

.navBtn {
    margin-right: 2.8rem;
}

.menu {
    background-color: #3C7AB0;
    padding: 0rem 2.4rem;
    position: fixed;
    bottom: 0;
    width: 100vw;

    display: flex;
    justify-content: space-around;
}

.menubtn:link,.menubtn:visited {
    display: flex;
    align-items: center;
    color: #fff;
    
    padding: 0.5rem 1.5rem;
    font-size: 1.6rem;
}

.menubtn:hover,.menubtn:active {
    background-color: #ADD1F1;
}

.menuicon {
    width: 3rem;
}

.sectionMain {
    background-image: linear-gradient(rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0.75)), url("/img/background.png");
    background-repeat: contain;
    background-position: center;
    background-attachment: fixed;
    width: 100vw;
    height: 100vh;

    display: flex;
    justify-content: center;
    padding: 15rem 2rem 5rem 2rem;
}