I am trying to make a header that stays fixed when I scroll down, but it only goes until the end of the header, which is set to 100vh. Does anyone have any idea how I can solve this without stopping using min-height?
I tried using JS to replace the class with fixed so that it only fixes after scrolling past the header, but without success.
document.addEventListener('DOMContentLoaded', function() {
const nav = document.getElementById('mainNav'); // Certifique-se de que o ID está correto
const header = document.querySelector('.header');
function handleScroll() {
const headerHeight = header.offsetHeight;
const scrollPosition = window.scrollY;
if (scrollPosition > headerHeight) {
nav.classList.add('fixed');
} else {
nav.classList.remove('fixed');
}
}
window.addEventListener('scroll', handleScroll);
});.header {
min-height: 100vh;
width: 100%;
background-image: linear-gradient(rgba(4, 9, 30, 0.7), rgba(4, 9, 30, 0.7)), url('img/background-main.jpg');
background-position: center;
background-size: cover;
text-align: center;
color: #fff;
position: relative;
}
nav {
display: flex;
padding: 2% 6%;
justify-content: space-between;
align-items: center;
z-index: 1000;
}
nav.fixed {
position: fixed;
top: 0;
left: 0;
z-index: 1001;
}
nav img {
width: 200px;
}
.nav-links {
flex: 1;
text-align: right;
}
.nav-links ul li {
list-style: none;
display: inline-block;
padding: 8px 12px;
position: relative;
}
.nav-links ul li a {
color: #fff;
text-decoration: none;
font-size: 16px;
font-weight: bold;
}
.nav-links ul li::after {
content: '';
width: 0%;
height: 2px;
background: #1b99ca;
display: block;
margin: auto;
transition: 0.5s;
}
.nav-links ul li:hover::after {
width: 100%;
}
.nav-links ul li:hover>ul.dropdown {
display: block;
}
ul li ul.dropdown {
position: absolute;
top: 100%;
left: 0;
background-color: rgba(41, 145, 255, 0.425);
z-index: 999;
display: none;
min-width: 130px;
border-radius: 5px;
box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.2);
}
ul li ul.dropdown li {
display: block;
padding: 10px;
}
ul li ul.dropdown li a {
color: #fff;
text-decoration: none;
display: block;
font-size: 14px;
font-weight: 600;
transition: 0.3s;
text-align: left;
}
ul li ul.dropdown li:hover {
background: #003580;
}
.text-box {
width: 90%;
color: #fff;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
text-align: center;
}
.text-box h1 {
font-size: 62px;
}
text-box p {
margin: 10px 0 40px;
font-size: 14px;
color: #fff;
}
.hero-btn {
display: inline-block;
text-decoration: none;
color: #fff;
border: 1px solid #fff;
padding: 12px 34px;
font-size: 13px;
background: transparent;
position: relative;
cursor: pointer;
transition: 0.6s;
margin-top: 15px;
border-radius: 5px;
}
.hero-btn:hover {
background-color: #1b99ca;
border: 1px solid #1b99ca;
transition: 1s;
}
nav .fa {
display: none;
}
nav .fa-bars {
font-size: 25px;
}<link href="https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap" rel="stylesheet">
<link rel="stylesheet" href="index.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.7.2/css/all.min.css" integrity="sha512-Evv84Mr4kqVGRNSgIGL/F/aIDqQb7xQ2vcrdIwxfjThSH8CSR7PBEakCr51Ck+w+/U6swU2Im1vVX0SVk9ABhg==" crossorigin="anonymous" referrerpolicy="no-referrer">
<section class="header">
<nav id="mainNav" class="mainNav">
<div class="logo">
<a href="index.html"> <img src="img/logo-padrao.png" alt="logo da JL Marine"></a>
</div>
<div class="nav-links" id="navLinks">
<i class="fa fa-times" onclick="hideMenu()"></i>
<ul class="ul">
<li><a href="index.html">Início</a></li>
<li>
<a href="#">Sobre</a>
<ul class="dropdown">
<li><a href="sobre.html">A Empresa</a></li>
<li><a href="equipe.html">Equipe</a></li>
</ul>
</li>
<li>
<a href="services/services.html">Serviços</a>
<ul class="dropdown">
<li><a href="services/marine.html">Marine</a></li>
<li><a href="services/log.html">Logística</a></li>
<li><a href="services/desp-adua.html">Despacho Aduaneiro</a></li>
<li><a href="services/comex.html">Comex</a></li>
<li><a href="services/outros.html">Outros</a></li>
</ul>
</li>
<li><a href="contacts.html">Contato</a></li>
</ul>
</div>
<i class="fa fa-bars" onclick="showMenu()"></i>
</nav>
<div class="text-box">
<h1>Conheça a JL Marine!</h1>
<p>Confiabilidade & Excelência</p>
<a href="sobre.html" class="hero-btn">Saiba Mais</a>
</div>
</section>
