列表中有8个项目，但最后4个项目从推荐部分的蓝色背景中移出

当我运行html和css代码时，推荐列表是8个，但当我将屏幕大小增加到950px时，8个项目的列表开始从后台显示出来，所以请有人给我提示代码哪里是错误的

const mobileBtn = document.getElementById('mobile-cta');
nav = document.querySelector('nav');
mobileBtnExit = document.getElementById('mobile-sta');
mobileBtn.addEventListener('click' , () => {
nav.classList.add('mobile-menu');
})
mobileBtnExit.addEventListener('click' , () => {
nav.classList.remove('mobile-menu'); 
})

:root {
--primary-color: #007af3;
}
body{
background: #F2F2F2;
margin: 0 ;
font-family: 'Poppins'; 
}
.navbar {
background: white;
padding: 1em;

.logo{
text-decoration: none;
font-weight: bold;
color: black ;
font-size: 1.2em;
span {
color: var(--primary-color);
}
}
nav{
display: none;
}
.container{
display: flex;
place-content: space-between;
}
.mobile-menu{
cursor: pointer;
}
}
a{
color: #444444;
}
ul {
list-style-type: none;
margin: 0;
padding: 0;
}
section{
padding: 5em 2em;
}
.hero{
text-align: center;
}
.left-col{
.subhead{
text-transform: uppercase;
font-weight: bold;
color: gray;
letter-spacing: .3em;
}
h1{
font-size: 2.5em;
line-height: 1.3em;
margin-top: .2em;
}
.primary-cta{
background: var(--primary-color);
color: white;
text-decoration: none;
padding: .6em 1.3em;
font-size: 1.4em;
border-radius: 5em;
font-weight: bold;
display: inline-block;
}
.watch-video-cta{
display: block;
margin-top: 1em;

img {
margin-right: .5em;
}
}
}
.hero-img{
width: 70% ;
margin-top: 3em;
}
section.features-section{
background: #20272e;
color: white;
}
ul.feature-list{
margin:  0;
padding-left: .1em;
display: grid;
grid-template-columns: repeat(auto-fit , minmax(19rem, 1fr));
li{
font-size: 1.1em;
margin-bottom: 1em;
margin-left: 2em;
position: relative;
&:before{
content: '';
left: -2em;
position: absolute;
width: 20px;
height: 20px;
background-image: url('../2021frontend/images/bullet.svg');
background-size: contain;
margin-right: .5em;
}
}

}
.features-section img{
display: none;
}

.testimonials-section{
background: var(--primary-color);
color: white;
li{
width: #006bd6;
text-align: center;
padding: 2em 1em;
width: 75%;
margin: 0 auto 5em auto;
border-radius: 1em;

img{
width: 5em;
height: 5em;
border: 5px solid #006bd6;
border-radius: 50%;
margin-top: -4.5em;
}
}
}
h2{
font-size: 2em;
}
label{
display: block;
font-size: 1.2em;
margin-bottom: .5em;
}
input, textarea{
width: 100%;
padding: .8em;
margin-bottom: 1em;
border-radius: .3em;
border: 1px solid gray;
box-sizing: border-box;
}
input[type="submit"]{
background-color: var(--primary-color);
color: white;
font-weight: bold;
font-size: 1.3em;
border: none;
margin-bottom: 5em;
border-radius: 5em;
display: inline-block;
padding: .8em 6.7em;
width: unset;
cursor: pointer;
}
iframe{
width: 100%;
height: 300px;
}
nav.mobile-menu{
display: block;
}
nav{
position: fixed;
z-index: 999;
width: 66%;
right: 0;
top: 0;
background: #20272e;
height: 100vh;
padding: 1em;
ul.primary-nav{
margin-top: 5em;
}
li{
a{
color:white;
text-decoration: none;
display: block;
padding: .5em;
font-size: 1.3em;
text-align: right;
&:hover{
font-weight: bold;
}
}
}
}
.mobile-mobile-closed {
float: right;
margin: .5em;
cursor: pointer;
}
//now here we desinging the pc version of the website
@media only screen and (min-width: 768px){
.mobile-menu, .mobile-menu-closed{
display: none;
}
.navbar .container{
display: grid;
grid-template-columns: 180px auto;
justify-content: unset;

}
.navbar nav{
display: flex;
justify-content: space-between;
background: none;
position: unset;
height: auto;
width: 100%;
padding: 0;
ul{
display: flex;
}
a{
color: black;
font-size: 1em;
padding: .1em 1em; 
}
ul.primary-nav{
margin: 0;
}
li.current a{
font-weight: bold;
}
li.go-premium-cta a{
color: var(--primary-color);
border: 3px solid var(--primary-color);
font-weight: bold;
border-radius: 5em;
margin-top: -.2em;
&:hover{
background: var(--primary-color);
color: white;
}
}
}
}
@media only screen and (min-width: 950px) {
.container{
width: 950px;
margin: 0 auto;
}
section{
padding: 10em 4em;
}

.hero .container{
display: flex;
justify-content: space-between;
text-align: left;
.left-col{
margin: 3em 3em 0 5em;
h1 {
font-size: 3em;
width: 90%;
}
}

}
.hero-img{
width: 30%;
margin-right: 8em;
}
.hero-cta{
display: flex;
}
.primary-cta{
margin-right: 1em;
}
ul.features-list{
display: block;
margin-left: 5em;
li{
font-size: 1.4em;
&:before{
width: 30px;
height: 30px;
}
}
}
.features-section{
position: relative;
}
.features-section img{
display:block;
position: absolute;
right: 0;
width: 325px;
bottom: -6em; 
height: 250px; 
}
.testimonials-section ul{
display: flex;
li {
margin: 0 1em;
flex-basis: 33.333333%;
}
}
.contact-section{
position: relative;
display: flex;

}
.contact-right{
position: absolute;
right: 0;
top: 0;
width: 45%;
height: 100%;
iframe{
height: 100%;
}
}
}
//here we done the styling of 1220px and after
@media only screen and (min-width: 1220px){
.features-section{
&:before{
content: '';
position: absolute;
width: 10%;
height: 20em;
background: var(--primary-color);
left: 0;
top: -4em;
}
&:after{
content: '';
position: absolute;
width: 200px;
height: 18em;
background: url('../2021frontend/images/dots.svg') no-repeat;
top: -1em;
left: auto;
}
}
}

<div class="navbar"> <!-- here class is the name given to the div block so that the css identify it for styling it-->
<div class="container">
<a class="logo" href="#">Let's<span>Code</span></a>

<img id="mobile-cta" class="mobile-menu" src="2021frontend/images/menu.svg" alt="Open navigation">
<nav>
<img id="mobile-sta" class="mobile-menu-closed" src="2021frontend/images/exit.svg" alt="Closed navigation">
<ul class="primary-nav">
<li class="home"><a href="#">Home</a></li>
<li><a href="#">Events</a></li>
<li><a href="#">Registration</a></li>
</ul>
<ul class="secondary-nav">
<li><a href="#">GrowYourMoney</a></li>
<li><a href="#">Projects</a></li>
</ul>
</nav>
</div>
</div>
<section  class="hero">

<div class="container">
<div class="left-col">
<p class="subhead">Share with the World &amp; Grow with the World</p>
<h1>We are here to make the Future</h1>
<div class="hero-cta">
<a href="#" class="primary-cta">Click Here</a>
<a href="#" class="watch-video-cta">
<img src="2021frontend/images/watch.svg" alt="Watch a video">Watch a Video
</a>
</div>        
</div>
<img src="2021frontend/images/illustration.svg" class="hero-img" alt="illustration-images">
</div>

</section>
<section class="features-section">
<div class="container">
<ul class="feature-list">
<li>Full Stack Web Development</li>
<li>Full Stack Mobile App Development</li>
<li>Cloud tech</li>
<li>Devops</li>
<li>Web3 Development</li>
<li>Stock Market</li>
</ul>
<img src="2021frontend/images/holding-phone.jpg" alt="Man holding phone">
</div>
</section>
<section class="testimonials-section">
<div class="container">
<ul>
<li>
<img src="2021frontend/images/person.jpg" alt="person">
<blockquote>"has a strong hold in full stack web Development, leader of team antidote in sih prefinal round"</blockquote>
<cite>- saksham bansal</cite>
</li>
<li>
<img src="2021frontend/images/person.jpg" alt="person">
<blockquote>"starting my journey as a full stack developer and interested in web3 domain"</blockquote>
<cite>- sayan halder</cite>
</li>
<li>
<img src="2021frontend/images/person.jpg" alt="person">
<blockquote>"currently doing frontend development with bootstrap and loves playing football and cricket"</blockquote>
<cite>- varun sharma</cite>
</li>
<li>
<img src="2021frontend/images/person.jpg" alt="person">
<blockquote>"currently learning web Development and see myself in future as a android developer "</blockquote>
<cite>- parth barara</cite>
</li>
<li>
<img src="2021frontend/images/person.jpg" alt="person">
<blockquote>"iam  the tomper of the class and likes chemistry very much"</blockquote>
<cite>- sakshi gupta</cite>
</li>
<li>
<img src="2021frontend/images/person.jpg" alt="person">
<blockquote>"i dont know what i am doing but my boyfriend loves me very much"</blockquote>
<cite>- nandini gulati</cite>
</li>
<li>
<img src="2021frontend/images/person.jpg" alt="person">
<blockquote>"same as nandini"</blockquote>
<cite>- kushi suri</cite>
</li>
<li>
<img src="2021frontend/images/person.jpg" alt="person">
<blockquote>"iam the don of kv, dont even try to fight with me in palam"</blockquote>
<cite>- sribash paul</cite>
</li>
</ul>
</div>
</section>
<br>
<section class="contact-section">
<div class="contact-left">
<h2>Contact</h2>
<form action="">
<label for="name">Name</label>
<input type="text" id="name" name="name" placeholder="Your Name"> <br>
<br>
<label for="email">Email</label>
<input type="email" id="email" name="email" placeholder="@email.com"> <br>
<br>
<label for="message">Message</label> <br>
<textarea name="message" id="message" cols="30" rows="10"></textarea> <br>
<br>
<input type="submit" class="send-message-cta" value="Send Message">
</form>
</div>

<div>
<div class="contact-right">
<iframe src="https://www.google.com/maps/embed?pb=!1m18!1m12!1m3!1d28026.467037845872!2d77.08443149999997!3d28.59052415000001!2m3!1f0!2f0!3f0!3m2!1i1024!2i768!4f13.1!3m3!1m2!1s0x390d1b3f9902dce7%3A0xdf51d27e693abbea!2sPalam%2C%20New%20Delhi%2C%20Delhi!5e0!3m2!1sen!2sin!4v1649777392215!5m2!1sen!2sin" width="600" height="450" style="border:0;" allowfullscreen="" loading="lazy" referrerpolicy="no-referrer-when-downgrade"></iframe>
</div>
</div>
<img src="2021frontend/images/" alt="">

</section>