style.css

*{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

.banner{
    width: 100%;
    height: 100vh;
    background-image: linear-gradient(rgba(0,0,0,0.75), rgba(0,0,0,0.75)), url(background.jpg) ;
    background-position: center;
    background-size: cover;
}

.logo{
    cursor: pointer;
}

.navbar{
    width: 85%;
    margin: auto;
    padding:20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar ul{
    margin: auto;
}

.navbar ul li{
    list-style: none;
    display: inline-block;
    margin: 0 20px;
    position: relative;
}

.navbar ul li a{
    text-decoration: none;
    color: #fff;
    text-transform: uppercase;
}

.navbar ul li a:hover{
    font-weight: bold;
    transition: 0.5s;
}

.navbar ul li a img{
    width: 40px;
}

.navbar ul li::after{
    content: '';
    height: 3px;
    width: 0;
    background: rgb(247, 194, 22);
    position: absolute;
    left: 0;
    bottom: -10px;
    transition: 0.5s;
}

.navbar ul li:hover::after{
    width: 100%;
}

.content{
    width: 100%;
    position: absolute;
    top: 45%;
    transform: translateY(-50%);
    text-align: center;
    color: #fff;
}

.content h1{
    font-size: 70px;
}

.content h4{
    font-size: 20px;
}

.content img{
    width: 380px;
    margin-top: 10px;
    margin-bottom: 10px;
}

button{
    width: 200px;
    padding: 15px 0;
    text-align: center;
    margin: 20px 10px;
    font-weight: bold;
    border-radius: 30px;
    border: 2px solid rgb(247, 194, 22);
    background: transparent;
    color: #fff;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    font-size: 18px;
}

span{
    background: rgb(247, 194, 22);
    height: 100%;
    width: 0;
    border-radius: 30px;
    position: absolute;
    left: 0;
    bottom: 0;
    z-index: -1;
    transition: 0.5s;
}


button:hover span{
    width: 100%;
}

button:hover{
    border: none;
}