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

body{

    font-family:'Poppins',sans-serif;

    background:url('../img/colegio.jpg');

    background-size:cover;

    background-position:center;

    min-height:100vh;

}

.fondo{

    background:rgba(0,0,0,.45);

    min-height:100vh;

}

header{

    background:white;

    box-shadow:0 5px 20px rgba(0,0,0,.15);

}

.logo{

    width:90px;

}

.titulo{

    color:#0b7d39;

    font-weight:700;

}

.subtitulo{

    color:#555;

}

.tarjeta{

    background:rgba(255,255,255,.92);

    border-radius:25px;

    padding:45px;

    box-shadow:0 15px 40px rgba(0,0,0,.30);

    backdrop-filter:blur(10px);

}

.btn-itec{

    background:#0b7d39;

    color:white;

    border:none;

    border-radius:40px;

    font-size:20px;

    padding:15px;

    transition:.4s;

}

.btn-itec:hover{

    background:#f5c400;

    color:#0b7d39;

    transform:translateY(-3px);

}

.icono{

    font-size:45px;

    color:#0b7d39;

}

footer{

    color:white;

    text-align:center;

    padding:20px;

}