styletc.css

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

}

.header {
   height: 15vh;
    width: 100%;
    background-image: linear-gradient(#517e86c4, #949fdf1a), url(images/bggg.webp);
    background-position: center;
    background-size: cover;
    position: relative;
  
}

nav {
    display: flex;
    padding: 2% 6%;
    justify-content: space-between;
    align-items: center;
}

nav .logo {
    text-decoration: none;
    font-size: 28px;
    color: #fff3f3;
    font-weight: bold;
}

nav .fab {
    font-size: 40px;

    color: #24f8c7;
}

.nav-links {
    flex: 1;
    text-align: right;
}

.nav-links ul li {
    display: inline-block;
    list-style: none;
    padding: 8px 12px;
    position: relative;
    text-transform: uppercase;
}

.nav-links ul li a {
    text-decoration: none;
    color: white;
    font-size: 18px;
}

.nav-links ul li::after {
    content: '';
    width: 0%;
    height: 2px;
    background: #24f8c7;
    display: block;
    margin: auto;
    transition: 0.5s;
}

.nav-links ul li:hover::after {
    width: 100%;
}
nav .fa {
    display: none;
}

@media(max-width: 700px) {

.nav-links ul li {
    display: block;
}

.nav-links {
    position: fixed;
    background: #47b19efa;
    height: 100vh;
    width: 200px;
    top: 0;
    right: -200px;
    text-align: left;
    z-index: 2;
    transition: 1.2s;
}

nav .fa {
    display: block;
    color: black;
    margin: 10px;
    font-size: 22px;
    cursor: pointer;
}

.nav-links ul {
    padding: 30px;
}
}