<header class="header">
<div class="container">
<div class="navbar">
<div class="logo">
<img src="img/logo.png" alt="Dart Service Manager">
</div>
<div class="menu">
<nav class="burger-menu">
<ul class="nav-menu nav-menu__active">
<li><a href="#">Home</a></li>
<li><a href="#">Service</a></li>
<li><a href="#">Extension</a></li>
<li><a href="#">Pricing</a></li>
<li><a href="#">Help</a></li>
</ul>
<a href="#" class="menu-btn">
<span></span>
</a>
</nav>
</div>
<div class="sign__up">
<a href="#" class="btn">sign up</a>
</div>
</div>
<div class="header__face">
<div class="buy">
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Dolor sit amet</h1>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do <br> beiusmod tempor incididunt labore et dolore magna aliqua. Ut enim ad <br> minim veniam, quis nostrud exercitation ullamc</p>
<a href="#" class="buy-btn offer__btn">Buy now</a>
<a href="#" class="try-btn offer__btn">Try for free</a>
</div>
<div class="video">
<div class="video-bg">
<img src="img/video.png" alt="Video">
</div>
<div class="play-btn">
<a href="#"><img src="img/play__button.png" alt="Play"></a>
<p>Watch the video</p>
</div>
</div>
</div>
</div>
</header>@media screen and (max-width: 503px) {
.nav-menu {
padding-top: 40px;
}
.menu li{
display: flex;
flex-direction: column;
text-align: center;
padding-top: 15px;
}
.menu-btn {
display: inline-block;
top: -300px;
left: -230px;
}
.nav-menu {
transform-origin: bottom center;
}
.nav-menu__active {
opacity: 1;
transform: scaleX(1) translateX(0);
}
.nav-menu__active {
transform: scaleX(0) translateX(5%);
opacity: 0;
}
.sign__up {
margin-top: -290px;
margin-left: 25px;
}
}$('.menu-btn').on('click', function(e){
e.preventDefault;
$(this).toggleClass('menu-btn__active');
$('.nav-menu').toggleClass('nav-menu__active');
})