*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, sans-serif;
}

html, body{
    height:100%;
}

body{
    background:#c9ccff;
    display:flex;
    flex-direction:column;
    min-height:100vh;
}

body.index{
    overflow:hidden;
}

header{
    background:#A8ADFF;
    padding:20px 60px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}

body.index header{
    background:transparent;
    position:absolute;
    width:100%;
    top:0;
    left:0;
}

.logo img{
    height:40px;
    max-width:100%;
    transition:0.3s;
}

.logo img:hover{
    transform:scale(1.1);
}

nav a{
    color:white;
    text-decoration:none;
    margin-left:25px;
    font-size:14px;
    position:relative;
}

nav a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:-6px;
    width:0;
    height:2px;
    background:white;
    transition:0.3s;
}

nav a:hover::after{
    width:100%;
}

main{
    flex:1;
}

footer{
    background:#A8ADFF;
    padding:40px 60px;
    display:flex;
    justify-content:space-between;
    color:white;
}

footer p{
    font-size:13px;
}

@media(max-width:768px){

    header{
        flex-direction:column;
        gap:20px;
        padding:20px;
    }

    .logo img{
        height:32px;
    }

    nav{
        display:flex;
        flex-wrap:wrap;
        justify-content:center;
        gap:15px;
    }

    nav a{
        margin-left:0;
    }

    footer{
        flex-direction:column;
        gap:20px;
        text-align:center;
        padding:30px 20px;
    }
}