*{
    padding: 0;
    margin: 0;
    font-family: 'Poppins', sans-serif;

}

.header{
    background: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(img_play.jpg);
    width: 100%;
    background-position: center;
    background-size: cover;
    position: relative;
}
nav{
    display: flex;
    padding: 2% 6%;
    justify-content: space-between;
    align-items: center;
}
nav img{
    width: 150px;

}
.nav_link{
    flex: 1;
    text-align: right;
}

.nav_link ul li{
    list-style: none;
    display: inline-block;
    padding: 12px 24px;
    position: relative;
}
.nav_link ul li a{
    color: #fff;
    text-decoration: none;
    font-size: 15px;
}
.nav_link ul li::after{
    content: '';
    width: 0%;
    height: 2px;
    background: #f44336;
    display: block;
    margin: auto;
    transition: 0.5s;
}
.nav_link ul li:hover::after{
    width: 100%;
}

.text_style{
    margin-top: 50px;
    text-align: center;
    
}

.all_device{
    display: flex;
    justify-content: space-around;
    margin-top: 50px;
}

.all_device img{
    height: 320px;
    width: 100%;
    position: relative;
    background-size: cover;
    background-position: center;
    cursor: pointer;
    transition: 0.3s;
    border-radius: 5px;
}

.all_device img:hover{
    opacity: 0.7;
    transform: translateY(-7px);
    
}

.all_device h2{
    text-align: center;
    margin-bottom: 20px;
}

#footer{ 
    margin-bottom: 70px;
}

@media (max-width: 700px){
    .all_device{
        flex-direction: column;
    }
}