*{
    margin: 0;
    padding: 0;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}
.banner{
    width: 100%;
    height: 100vh;
    background-image: linear-gradient(rgba(73, 73, 119, 0.37), rgba(73, 73, 119, 0.37)), url(back.jpg);
    background-size: cover;
    background-position: center;
}
.navbar{
    width: 85%;
    margin: auto;
    padding: 35px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo{
    width: 160px;
    cursor: pointer;
}
.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::after{
    content: '';
    height: 3px;
    width: 0;
    background: #ffffff;
    position: absolute;
    left: 0;
    bottom: -10px;
    transition: 0.5s; 
}
.navbar ul li:hover::after{
    width: 100%;
}
.content{
    width: 100%;
    position: absolute;
    top: 40%;
    transform: traslateY(-40%);
    text-align: center;
    color: #fff;
}
.content h1{
    font-family: Verdana, Tahoma, sans-serif;
    font-size: 70px;
    margin-top: 20px;
}
.content p{
    margin: 20px auto;
    font-weight: 100;
    line-height: 25px;
}
button{
    width: 200px;
    padding: 10px 10px;
    text-align: center;
    font-size: 20px;
    margin: 70px 30px;
    border-radius: 30px;
    font-weight: bold;
    border: 2px solid rgba(120, 120, 168, 0.63);
    background: transparent;
    color: #fff;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}
span{
    background: rgba(120, 120, 168, 0.63);
    height: 100%;
    width: 0;
    border-radius: 25px;
    position: absolute;
    left: 0;
    bottom: 0;
    z-index: 0;
    transition: 0.3s;
}
button:hover span{
    width: 100%;
}
button:hover{
    border: none;
}