*{
    margin: 0;
    padding : 0;
    font-family: 'Roboto', sans-serif;
    font-family: 'Source Sans Pro', sans-serif;
}
.header{
    min-height: 100vh;
    width: 100%;
    background-image: linear-gradient(rgba(4,9,30,0.7),rgba(4,9,30,0.7)),url(images/about.jpg);
    background-position: center;
    background-size: cover;
    position: relative;
  }

nav{
    display: flex;
    padding: 2% 4%;
    justify-content: space-between;
    align-items: center;
}
.nav-links{
    width: 150px;
}
.nav-links{
    flex: 1;
    text-align: center;
}
.nav-links ul li{
    list-style: none;
    display: inline-block;
    padding: 12px 16px;
    position: relative;
}
.nav-links ul li a{
    color: #fff;
    text-decoration: none;
    font-size:26px;
}
.nav-links ul li::after{
    content: '';
    width:100%;
    height:2px;
    background: #f443
}
.text-box{
    width: 90%;
    color: #fff;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    text-align: center;
    
} 
.text-box h1{
    font-size: 60px;
}

.text-box p{
    margin:10px 0 40px;
    font-size: 24px;
}