*{
    margin: 0;
    padding: 0;
}

.banner{
    width: 100%;
    height: 100vh;
    background-image:linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url(images/ip13.jpg) ;
    background-size: cover;
    background-position: center;

}

.navbar {
    width: 85%;
    margin: auto ;
    padding: 35px;
    display: flex;
    align-items: center;
    justify-content:space-between;

}

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

.navbar ul li a{
    text-decoration: none;
    color: black;
    text-transform: uppercase;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    font-weight: bold;

}

.navbar ul li::after{
    content:'';
    height: 3px;
    width: 0%;
    background:white;
    position: absolute;
    left: 0%;
    bottom: 0px ;
    transition: 0.7s;
}

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

}

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

.content h1 {
    font-size: 70px;
    margin-top: 80px;

}

.content p {
    margin:20px auto ;
    font-weight: 100;
    line-height: 25px;
}

button {
    width: 200px;
    padding: 15px 0;
    text-align: center;
    margin: 20px 10px;
    border-radius: 25px;
    font-weight: bold;
    border: 2px solid white;
    background: transparent;
    color: whitesmoke;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

span {
    background: red;
    height: 100%;
    width:0 ;
    border-radius: 25px;
    position: absolute;
    left: 0;
    bottom: 0;
    z-index:-1;
    transition: 0.7s;
}

button:hover span {
    width: 100%;
}

button:hover span {
    border: none;
    
}

a{
    color: whitesmoke;
    text-decoration: underline;
    font-weight: bolder;
}