*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #333;
    color: white;
}

header{
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

header:before{
    content: '';
    background: url('../IMG/clemente-cardenas-Qx3u15VDj0w-unsplash.jpg') no-repeat center center/cover;
    opacity: .4;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}



header h1{
    font-size: 4rem;
    margin: 1rem;
}

header p{
    line-height: 1.6rem;
}

header a{
    color:  mintcream;
    text-decoration: none;
}

header a:hover{
    color: coral;
}

header a:active{
    color: mintcream;
}