*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial,Helvetica,sans-serif;
}

body{
    background:#0d1323;
    color:white;
}

header{
    width:100%;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:25px 10%;
}

.logo{
    font-size:30px;
    font-weight:bold;
    color:#00d9ff;
}

nav a{
    color:white;
    text-decoration:none;
    margin-left:30px;
    transition:.3s;
}

nav a:hover,
nav .active{
    color:#00d9ff;
}

.hero{
    min-height:90vh;
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:0 10%;
}

.content{
    width:50%;
}

.content h3{
    font-size:28px;
}

.content h1{
    font-size:60px;
    margin:10px 0;
}

.content h2{
    font-size:35px;
}

.content span{
    color:#00d9ff;
}

.content p{
    margin:25px 0;
    color:#c9c9c9;
    line-height:1.7;
}

.social{
    margin:25px 0;
}

.social a{
    width:45px;
    height:45px;
    display:inline-flex;
    justify-content:center;
    align-items:center;
    border:2px solid #00d9ff;
    border-radius:50%;
    color:#00d9ff;
    margin-right:12px;
    text-decoration:none;
    transition:.4s;
}

.social a:hover{
    background:#00d9ff;
    color:#0d1323;
}

button{
    padding:15px 40px;
    border:none;
    border-radius:30px;
    background:#00d9ff;
    color:#111;
    font-size:17px;
    cursor:pointer;
    font-weight:bold;
    transition:.3s;
}

button:hover{
    transform:translateY(-4px);
    box-shadow:0 0 20px #00d9ff;
}

.image{
    position:relative;
    width:400px;
    height:400px;
}

.circle{
    width:350px;
    height:350px;
    background:#00d9ff;
    border-radius:50%;
    position:absolute;
    top:25px;
    left:25px;
}

.image img{
    position:absolute;
    width:100%;
    height:100%;
    object-fit:cover;
    border-radius:50%;
}

@media(max-width:900px){

.hero{
    flex-direction:column-reverse;
    text-align:center;
    padding:50px 20px;
}

.content{
    width:100%;
}

.image{
    width:300px;
    height:300px;
    margin-bottom:40px;
}

.circle{
    width:260px;
    height:260px;
}
}